diff --git a/src/components/Executions.jsx b/src/components/Executions.jsx
index ec82cd1..880ee48 100644
--- a/src/components/Executions.jsx
+++ b/src/components/Executions.jsx
@@ -6,10 +6,10 @@ import {
   DISPLAY_NAME,
   EXECUTION_DURATION,
   FINISH_DATE_UNIX,
-  Rest,
   START_DATE_UNIX,
   TRANSFORMATION,
-} from "./rest/Rest";
+} from "../constants/Vocabulary.js";
+import Rest from "./rest/Rest.jsx";
 import { Col, Container, Row, Table } from "react-bootstrap";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faMugHot, faTrash, faRunning, faPlayCircle, faEdit, faQuestion } from "@fortawesome/free-solid-svg-icons";
diff --git a/src/components/ModuleTypesSelection.jsx b/src/components/ModuleTypesSelection.jsx
index bfa0286..a8e7475 100644
--- a/src/components/ModuleTypesSelection.jsx
+++ b/src/components/ModuleTypesSelection.jsx
@@ -1,6 +1,6 @@
 import React from "react";
 import { Dropdown } from "semantic-ui-react";
-import { Rest } from "./rest/Rest";
+import Rest from "./rest/Rest";
 import { ICONS_MAP } from "./dagre/DagreIcons";
 
 class ModuleTypesSelection extends React.Component {
diff --git a/src/components/ScriptFunctionSelection.jsx b/src/components/ScriptFunctionSelection.jsx
index bcdc176..b786b33 100644
--- a/src/components/ScriptFunctionSelection.jsx
+++ b/src/components/ScriptFunctionSelection.jsx
@@ -1,6 +1,7 @@
 import React from "react";
 import { Dropdown } from "semantic-ui-react";
-import { FUNCTION, FUNCTION_NAME, Rest } from "./rest/Rest";
+import { FUNCTION_URI, FUNCTION_NAME } from "../constants/Vocabulary.js";
+import Rest from "./rest/Rest.jsx";
 import { ICONS_MAP } from "./dagre/DagreIcons";
 
 class ScriptFunctionSelection extends React.Component {
@@ -15,9 +16,9 @@ class ScriptFunctionSelection extends React.Component {
     Rest.getModulesFunctions(this.props.scriptPath).then((res) => {
       const options = res.map((r) => {
         return {
-          key: r[FUNCTION],
+          key: r[FUNCTION_URI],
           text: r[FUNCTION_NAME],
-          value: r[FUNCTION],
+          value: r[FUNCTION_URI],
           image: { avatar: true, src: "/icons/fire-extinguisher.png" },
         };
       });
diff --git a/src/components/dagre/Dagre.jsx b/src/components/dagre/Dagre.jsx
index 92b3872..d2a8428 100644
--- a/src/components/dagre/Dagre.jsx
+++ b/src/components/dagre/Dagre.jsx
@@ -6,14 +6,7 @@ import cxtmenu from "cytoscape-cxtmenu";
 import popper from "cytoscape-popper";
 import navigator from "cytoscape-navigator";
 import expandCollapse from "cytoscape-expand-collapse";
-import {
-  MODULE_URI,
-  MODULE_VARIABLE_NAME,
-  MODULE_VARIABLE_VALUE,
-  MODULE_VARIABLES,
-  Rest,
-  SCRIPT_PATH,
-} from "../rest/Rest";
+import Rest from "../rest/Rest.jsx";
 import NavbarMenu from "../NavbarMenu";
 import SFormsModal from "../sform/SFormsModal";
 import ModuleTypesSelection from "../ModuleTypesSelection";
@@ -31,24 +24,31 @@ import SFormsFunctionModal from "../sform/SFormsFunctionModal";
 import "@kbss-cvut/s-forms/css";
 import Loading from "../Loading";
 import ErrorModal from "../modal/ErrorModal";
-const TYPE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-module-type";
-const LABEL = "http://www.w3.org/2000/01/rdf-schema#label";
-const X = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-x-coordinate";
-const Y = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-y-coordinate";
-const EDGE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/consists-of-edge";
-const SOURCE_NODE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-source-node";
-const DESTINATION_NODE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-destination-node";
-const NODE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/consists-of-node";
-const ICON = "http://topbraid.org/sparqlmotion#icon";
-const COMMENT = "http://www.w3.org/2000/01/rdf-schema#comment";
-const ANSWERS = "http://onto.fel.cvut.cz/ontologies/documentation/has_answer";
-const OBJECT_VALUE = "http://onto.fel.cvut.cz/ontologies/documentation/has_object_value";
-const COMPONENT = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/component";
-const FUNCTION_LOCAL_NAME = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-function-local-name";
-const FUNCTION_URI = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-function-uri";
-const INPUT_PARAMETER = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-input-parameter";
-const OUTPUT_PARAMETER = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-output-parameter";
-const GROUP = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/group";
+import {
+  TYPE,
+  LABEL,
+  X,
+  Y,
+  EDGE,
+  SOURCE_NODE,
+  DESTINATION_NODE,
+  NODE,
+  ICON,
+  COMMENT,
+  ANSWERS,
+  OBJECT_VALUE,
+  COMPONENT,
+  FUNCTION_LOCAL_NAME,
+  FUNCTION_URI,
+  INPUT_PARAMETER,
+  OUTPUT_PARAMETER,
+  GROUP,
+  MODULE_URI,
+  MODULE_VARIABLE_NAME,
+  MODULE_VARIABLE_VALUE,
+  MODULE_VARIABLES,
+  SCRIPT_PATH,
+} from "../../constants/Vocabulary.js";
 
 const rankDirOptions = [
   // preset
diff --git a/src/components/modal/ErrorModal.jsx b/src/components/modal/ErrorModal.jsx
index c7cce97..15409e3 100644
--- a/src/components/modal/ErrorModal.jsx
+++ b/src/components/modal/ErrorModal.jsx
@@ -1,7 +1,6 @@
 import React from "react";
 
 import { Button, Form, Modal } from "react-bootstrap";
-import { Rest } from "../rest/Rest";
 
 class ErrorModal extends React.Component {
   constructor(props) {
diff --git a/src/components/modal/MoveModuleModal.jsx b/src/components/modal/MoveModuleModal.jsx
index 552d1f4..42e9b6a 100644
--- a/src/components/modal/MoveModuleModal.jsx
+++ b/src/components/modal/MoveModuleModal.jsx
@@ -9,12 +9,12 @@ import {
   FINISH_DATE_UNIX,
   MODULE_URI,
   ONTOLOGY_URI,
-  Rest,
   RULE_COMMENT,
   SCRIPT_PATH,
   START_DATE_UNIX,
   TRANSFORMATION,
-} from "../rest/Rest";
+} from "../../constants/Vocabulary.js";
+import Rest from "../rest/Rest.jsx";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faEdit, faMugHot, faPlayCircle, faTrash } from "@fortawesome/free-solid-svg-icons";
 import { Link } from "react-router-dom";
diff --git a/src/components/modal/ScriptActionsModuleModal.jsx b/src/components/modal/ScriptActionsModuleModal.jsx
index bcee202..2b6ed58 100644
--- a/src/components/modal/ScriptActionsModuleModal.jsx
+++ b/src/components/modal/ScriptActionsModuleModal.jsx
@@ -9,12 +9,11 @@ import {
   FINISH_DATE_UNIX,
   MODULE_URI,
   ONTOLOGY_URI,
-  Rest,
   RULE_COMMENT,
   SCRIPT_PATH,
   START_DATE_UNIX,
   TRANSFORMATION,
-} from "../rest/Rest";
+} from "../../constants/Vocabulary.js";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faEdit, faMugHot, faPlayCircle, faTrash } from "@fortawesome/free-solid-svg-icons";
 import { Link } from "react-router-dom";
diff --git a/src/components/modal/ScriptExecutionModal.jsx b/src/components/modal/ScriptExecutionModal.jsx
index efd98df..c884852 100644
--- a/src/components/modal/ScriptExecutionModal.jsx
+++ b/src/components/modal/ScriptExecutionModal.jsx
@@ -6,14 +6,13 @@ import {
   MODULE_EXECUTION_START_DATE,
   MODULE_EXECUTION_DURATION,
   MODULE_URI,
-  Rest,
   MODULE_INPUT_PATH,
   MODULE_OUTPUT_PATH,
   EXECUTION_VARIABLE,
   MODULE_VARIABLES,
   MODULE_VARIABLE_NAME,
   MODULE_VARIABLE_VALUE,
-} from "../rest/Rest";
+} from "../../constants/Vocabulary.js";
 import { faDownload, faMugHot } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 
diff --git a/src/components/modal/ScriptOntologyModal.jsx b/src/components/modal/ScriptOntologyModal.jsx
index 0cf2c38..d7418bf 100644
--- a/src/components/modal/ScriptOntologyModal.jsx
+++ b/src/components/modal/ScriptOntologyModal.jsx
@@ -9,12 +9,11 @@ import {
   FINISH_DATE_UNIX,
   MODULE_URI,
   ONTOLOGY_URI,
-  Rest,
   RULE_COMMENT,
   SCRIPT_PATH,
   START_DATE_UNIX,
   TRANSFORMATION,
-} from "../rest/Rest";
+} from "../../constants/Vocabulary.js";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faEdit, faMugHot, faPlayCircle, faPlusCircle, faTrash } from "@fortawesome/free-solid-svg-icons";
 import { Link } from "react-router-dom";
diff --git a/src/components/modal/ValidationReportModal.jsx b/src/components/modal/ValidationReportModal.jsx
index 1f5ba9e..c9a4ef6 100644
--- a/src/components/modal/ValidationReportModal.jsx
+++ b/src/components/modal/ValidationReportModal.jsx
@@ -8,11 +8,11 @@ import {
   EXECUTION_DURATION,
   FINISH_DATE_UNIX,
   MODULE_URI,
-  Rest,
   RULE_COMMENT,
   START_DATE_UNIX,
   TRANSFORMATION,
-} from "../rest/Rest";
+} from "../../constants/Vocabulary.js";
+import Rest from "../rest/Rest.jsx";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faEdit, faMugHot, faPlayCircle, faTrash } from "@fortawesome/free-solid-svg-icons";
 import { Link } from "react-router-dom";
diff --git a/src/components/rest/Rest.jsx b/src/components/rest/Rest.jsx
index 857dde8..e39f74c 100644
--- a/src/components/rest/Rest.jsx
+++ b/src/components/rest/Rest.jsx
@@ -1,47 +1,5 @@
 import React from "react";
-
-//TODO - refactor to separate
-export const SCRIPT_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/script-dto";
-export const QUESTION_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/question-dto";
-export const ROOT_QUESTION = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-root-question";
-export const SCRIPT_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-script-path";
-export const MODULE_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/module-dto";
-export const DEPENDENCY_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/dependency-dto";
-export const MOVE_MODULE_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/move-module-dto";
-export const ABSOLUTE_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-absolute-path";
-export const MODULE_URI = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-uri";
-export const RULE_COMMENT = "http://onto.fel.cvut.cz/ontologies/s-pipes/rule-comment";
-export const ERROR_MESSAGE = "http://onto.fel.cvut.cz/ontologies/s-pipes/error-message";
-export const MODULE_LOG = "http://onto.fel.cvut.cz/ontologies/s-pipes/module-log-dto";
-export const MODULE_TYPE_URI = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-type-uri";
-export const TARGET_MODULE_URI = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-target-module-uri";
-export const TRANSFORMATION_ID = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-transformation-id";
-export const DISPLAY_NAME = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-display-name";
-export const START_DATE_UNIX = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-pipeline-execution-start-date-unix";
-export const FINISH_DATE_UNIX = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-pipeline-execution-finish-date-unix";
-export const EXECUTION_DURATION = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-pipeline-execution-duration";
-export const TRANSFORMATION = "http://onto.fel.cvut.cz/ontologies/dataset-descriptor/transformation";
-export const FUNCTION = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-function-uri";
-export const FUNCTION_NAME = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-function-local-name";
-export const ONTOLOGY_URI = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-ontology-uri";
-export const SCRIPT_NAME = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-name";
-export const SCRIPT_CREATE_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/script-create-dto";
-export const SCRIPT_ONTOLOGY_CREATE_DTO = "http://onto.fel.cvut.cz/ontologies/s-pipes/script-ontology-create-dto";
-export const MODULE_FROM_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-from-path";
-export const MODULE_TO_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-to-path";
-export const RENAME_MODULE = "http://onto.fel.cvut.cz/ontologies/s-pipes/rename-module";
-export const EXECUTION_INFO = "http://onto.fel.cvut.cz/ontologies/s-pipes/module-execution-info";
-export const EXECUTION_VARIABLE = "http://onto.fel.cvut.cz/ontologies/s-pipes/execution-variable-dto";
-export const MODULE_VARIABLES = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-variables";
-export const MODULE_EXECUTION_DURATION = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-execution-duration";
-export const MODULE_EXECUTION_START_DATE =
-  "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-execution-start-date-unix";
-export const MODULE_EXECUTION_FINISH_DATE =
-  "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-execution-finish-date-unix";
-export const MODULE_INPUT_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-input-path";
-export const MODULE_OUTPUT_PATH = "http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-output-path";
-export const MODULE_VARIABLE_NAME = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-variable-name";
-export const MODULE_VARIABLE_VALUE = "http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-variable-value";
+import * as Vocabulary from "../../constants/Vocabulary.js";
 
 const postRequestOptions = {
   method: "POST",
@@ -51,8 +9,7 @@ const postRequestOptions = {
   },
 };
 
-//TODO consider React api
-export const Rest = {
+const Rest = {
   getScripts: function () {
     return fetch("/rest/scripts")
       .then((res) => res.json())
@@ -67,9 +24,9 @@ export const Rest = {
 
   getScript: function (script, transformation) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [SCRIPT_PATH]: script,
-      [TRANSFORMATION_ID]: transformation,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.SCRIPT_PATH]: script,
+      [Vocabulary.TRANSFORMATION_ID]: transformation,
     });
     return fetch("/rest/views/new", postRequestOptions)
       .then((res) => res.json())
@@ -80,8 +37,8 @@ export const Rest = {
 
   deleteScript: function (script) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: script,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: script,
     });
     return fetch("/rest/scripts/delete", postRequestOptions).then((result) => {
       return result;
@@ -90,8 +47,8 @@ export const Rest = {
 
   getScriptOntologies: function (script) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: script,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: script,
     });
     return fetch("/rest/scripts/ontologies", postRequestOptions)
       .then((res) => res.json())
@@ -102,9 +59,9 @@ export const Rest = {
 
   removeScriptOwnOntology: function (script, ontologyURI) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_ONTOLOGY_CREATE_DTO,
-      [SCRIPT_PATH]: script,
-      [ONTOLOGY_URI]: ontologyURI,
+      "@type": Vocabulary.SCRIPT_ONTOLOGY_CREATE_DTO,
+      [Vocabulary.SCRIPT_PATH]: script,
+      [Vocabulary.ONTOLOGY_URI]: ontologyURI,
     });
     return fetch("/rest/scripts/ontology/remove", postRequestOptions).then((result) => {
       return result;
@@ -113,9 +70,9 @@ export const Rest = {
 
   addScriptOwnOntology: function (script, ontologyURI) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_ONTOLOGY_CREATE_DTO,
-      [SCRIPT_PATH]: script,
-      [ONTOLOGY_URI]: ontologyURI,
+      "@type": Vocabulary.SCRIPT_ONTOLOGY_CREATE_DTO,
+      [Vocabulary.SCRIPT_PATH]: script,
+      [Vocabulary.ONTOLOGY_URI]: ontologyURI,
     });
     return fetch("/rest/scripts/ontology/add", postRequestOptions).then((result) => {
       return result;
@@ -124,8 +81,8 @@ export const Rest = {
 
   getScriptOwnOntology: function (script) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: script,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: script,
     });
     return fetch("/rest/scripts/own-ontology", postRequestOptions)
       .then((res) => res.json())
@@ -136,10 +93,10 @@ export const Rest = {
 
   getScriptForm: function (moduleTypeUri, moduleUri, scriptPath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": QUESTION_DTO,
-      [MODULE_TYPE_URI]: moduleTypeUri,
-      [MODULE_URI]: moduleUri,
-      [SCRIPT_PATH]: scriptPath,
+      "@type": Vocabulary.QUESTION_DTO,
+      [Vocabulary.MODULE_TYPE_URI]: moduleTypeUri,
+      [Vocabulary.MODULE_URI]: moduleUri,
+      [Vocabulary.SCRIPT_PATH]: scriptPath,
     });
     return fetch("/rest/scripts/forms", postRequestOptions)
       .then((res) => res.json())
@@ -150,9 +107,9 @@ export const Rest = {
 
   getFunctionForm: function (scriptPath, functionUri) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": "http://onto.fel.cvut.cz/ontologies/s-pipes/execution-function-dto",
-      [SCRIPT_PATH]: scriptPath,
-      [FUNCTION]: functionUri,
+      "@type": Vocabulary.EXECUTION_FUNCTION_DTO,
+      [Vocabulary.SCRIPT_PATH]: scriptPath,
+      [Vocabulary.FUNCTION_URI]: functionUri,
     });
     return fetch("/rest/function/form", postRequestOptions)
       .then((res) => res.json())
@@ -163,10 +120,10 @@ export const Rest = {
 
   createScript: function (ontologyURI, scriptName, scriptPath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_CREATE_DTO,
-      [ONTOLOGY_URI]: ontologyURI,
-      [SCRIPT_NAME]: scriptName,
-      [SCRIPT_PATH]: scriptPath,
+      "@type": Vocabulary.SCRIPT_CREATE_DTO,
+      [Vocabulary.ONTOLOGY_URI]: ontologyURI,
+      [Vocabulary.SCRIPT_NAME]: scriptName,
+      [Vocabulary.SCRIPT_PATH]: scriptPath,
     });
     return fetch("/rest/scripts/create", postRequestOptions).then((result) => {
       return result;
@@ -175,8 +132,8 @@ export const Rest = {
 
   getLogForm: function (logPath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": MODULE_LOG,
-      [ABSOLUTE_PATH]: logPath,
+      "@type": Vocabulary.MODULE_LOG,
+      [Vocabulary.ABSOLUTE_PATH]: logPath,
     });
     return fetch("/rest/scripts/load-log", postRequestOptions)
       .then((res) => res.json())
@@ -187,10 +144,10 @@ export const Rest = {
 
   updateScriptForm: function (moduleTypeUri, rootQuestion, scriptPath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": QUESTION_DTO,
-      [MODULE_TYPE_URI]: moduleTypeUri,
-      [ROOT_QUESTION]: rootQuestion,
-      [SCRIPT_PATH]: scriptPath,
+      "@type": Vocabulary.QUESTION_DTO,
+      [Vocabulary.MODULE_TYPE_URI]: moduleTypeUri,
+      [Vocabulary.ROOT_QUESTION]: rootQuestion,
+      [Vocabulary.SCRIPT_PATH]: scriptPath,
     });
     console.log("update script json: " + postRequestOptions);
     return fetch("/rest/scripts/forms/answers", postRequestOptions);
@@ -198,30 +155,30 @@ export const Rest = {
 
   deleteScriptNode: function (filepath, nodeId) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": MODULE_DTO,
-      [ABSOLUTE_PATH]: filepath,
-      [MODULE_URI]: nodeId,
+      "@type": Vocabulary.MODULE_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: filepath,
+      [Vocabulary.MODULE_URI]: nodeId,
     });
     return fetch("/rest/scripts/modules/delete", postRequestOptions);
   },
 
   deleteScriptEdge: function (filepath, fromNodeId, toNodeId) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": DEPENDENCY_DTO,
-      [ABSOLUTE_PATH]: filepath,
-      [MODULE_URI]: fromNodeId,
-      [TARGET_MODULE_URI]: toNodeId,
+      "@type": Vocabulary.DEPENDENCY_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: filepath,
+      [Vocabulary.MODULE_URI]: fromNodeId,
+      [Vocabulary.TARGET_MODULE_URI]: toNodeId,
     });
     return fetch("/rest/scripts/modules/dependencies/delete", postRequestOptions);
   },
 
   moveModule: function (fromScript, toScript, moduleUri, rename) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": MOVE_MODULE_DTO,
-      [MODULE_FROM_PATH]: fromScript,
-      [MODULE_TO_PATH]: toScript,
-      [MODULE_URI]: moduleUri,
-      [RENAME_MODULE]: rename,
+      "@type": Vocabulary.MOVE_MODULE_DTO,
+      [Vocabulary.MODULE_FROM_PATH]: fromScript,
+      [Vocabulary.MODULE_TO_PATH]: toScript,
+      [Vocabulary.MODULE_URI]: moduleUri,
+      [Vocabulary.RENAME_MODULE]: rename,
     });
     return fetch("/rest/scripts/modules/move", postRequestOptions).then((result) => {
       return result;
@@ -230,8 +187,8 @@ export const Rest = {
 
   getModulesTypes: function (filepath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: filepath,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: filepath,
     });
     return fetch("/rest/scripts/moduleTypes", postRequestOptions)
       .then((res) => res.json())
@@ -242,8 +199,8 @@ export const Rest = {
 
   getModulesFunctions: function (filepath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: filepath,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: filepath,
     });
     return fetch("/rest/function/script", postRequestOptions)
       .then((res) => res.json())
@@ -254,20 +211,20 @@ export const Rest = {
 
   executeFunction: function (functionUri, params) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": "http://onto.fel.cvut.cz/ontologies/s-pipes/execution-function-dto",
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes/has-function-uri"]: functionUri,
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-parameter"]: params,
+      "@type": Vocabulary.EXECUTION_FUNCTION_DTO,
+      [Vocabulary.FUNCTION_URI]: functionUri,
+      [Vocabulary.PARAMETER]: params,
     });
     return fetch("/rest/function/execute", postRequestOptions);
   },
 
   executeModule: function (scriptPath, moduleURI, moduleInput, params) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": "http://onto.fel.cvut.cz/ontologies/s-pipes/execution-module-dto",
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes/has-script-path"]: scriptPath,
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes/has-module-uri"]: moduleURI,
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-input-parameter"]: moduleInput,
-      ["http://onto.fel.cvut.cz/ontologies/s-pipes-view/has-parameter"]: params,
+      "@type": Vocabulary.EXECUTION_MODULE_DTO,
+      [Vocabulary.SCRIPT_PATH]: scriptPath,
+      [Vocabulary.MODULE_URI]: moduleURI,
+      [Vocabulary.INPUT_PARAMETER]: moduleInput,
+      [Vocabulary.PARAMETER]: params,
     });
     return fetch("/rest/function/module/execute", postRequestOptions)
       .then((res) => res.text())
@@ -278,18 +235,18 @@ export const Rest = {
 
   addModuleDependency: function (scriptPath, moduleUri, targetModuleUri) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": DEPENDENCY_DTO,
-      [ABSOLUTE_PATH]: scriptPath,
-      [MODULE_URI]: moduleUri,
-      [TARGET_MODULE_URI]: targetModuleUri,
+      "@type": Vocabulary.DEPENDENCY_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: scriptPath,
+      [Vocabulary.MODULE_URI]: moduleUri,
+      [Vocabulary.TARGET_MODULE_URI]: targetModuleUri,
     });
     return fetch("/rest/scripts/modules/dependency", postRequestOptions);
   },
 
   validateScript: function (filepath) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [ABSOLUTE_PATH]: filepath,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.ABSOLUTE_PATH]: filepath,
     });
     return fetch("/rest/scripts/validate", postRequestOptions)
       .then((res) => res.json())
@@ -300,8 +257,8 @@ export const Rest = {
 
   getScriptModuleExecution: function (transformationId) {
     postRequestOptions["body"] = JSON.stringify({
-      "@type": SCRIPT_DTO,
-      [TRANSFORMATION_ID]: transformationId,
+      "@type": Vocabulary.SCRIPT_DTO,
+      [Vocabulary.TRANSFORMATION_ID]: transformationId,
     });
     return fetch("/rest/execution/history-modules", postRequestOptions)
       .then((res) => res.json())
@@ -310,3 +267,5 @@ export const Rest = {
       });
   },
 };
+
+export default Rest;
diff --git a/src/components/sform/SFormsFunctionModal.jsx b/src/components/sform/SFormsFunctionModal.jsx
index a891e9d..cae3849 100644
--- a/src/components/sform/SFormsFunctionModal.jsx
+++ b/src/components/sform/SFormsFunctionModal.jsx
@@ -2,7 +2,7 @@ import React from "react";
 import SForms from "@kbss-cvut/s-forms";
 
 import { Button, Modal } from "react-bootstrap";
-import { Rest } from "../rest/Rest";
+import Rest from "../rest/Rest";
 import "@triply/yasgui/build/yasgui.min.css";
 import ErrorModal from "../modal/ErrorModal";
 import ScriptActionsModuleModal from "../modal/ScriptActionsModuleModal";
diff --git a/src/components/sform/SFormsModal.jsx b/src/components/sform/SFormsModal.jsx
index 7f1a32b..7857630 100644
--- a/src/components/sform/SFormsModal.jsx
+++ b/src/components/sform/SFormsModal.jsx
@@ -1,7 +1,7 @@
 import React from "react";
 import SForms from "@kbss-cvut/s-forms";
 import { Button, Modal } from "react-bootstrap";
-import { Rest } from "../rest/Rest";
+import Rest from "../rest/Rest";
 import Loading from "../Loading";
 import "@triply/yasgui/build/yasgui.min.css";
 import ErrorModal from "../modal/ErrorModal";
diff --git a/src/components/sform/ScriptInputOutputModal.jsx b/src/components/sform/ScriptInputOutputModal.jsx
index ab05e25..07c6b2f 100644
--- a/src/components/sform/ScriptInputOutputModal.jsx
+++ b/src/components/sform/ScriptInputOutputModal.jsx
@@ -1,7 +1,7 @@
 import React from "react";
 
 import { Alert, Button, Form, Modal } from "react-bootstrap";
-import { Rest } from "../rest/Rest";
+import Rest from "../rest/Rest";
 import Yasgui from "@triply/yasgui";
 import "@triply/yasgui/build/yasgui.min.css";
 import JSONPretty from "react-json-pretty";
diff --git a/src/components/treebeard/ScriptsTree.jsx b/src/components/treebeard/ScriptsTree.jsx
index f0b0910..6e05cda 100644
--- a/src/components/treebeard/ScriptsTree.jsx
+++ b/src/components/treebeard/ScriptsTree.jsx
@@ -4,7 +4,7 @@ import { includes } from "lodash";
 import styles from "./styles";
 import Header from "./Header";
 import { Treebeard, decorators } from "react-treebeard";
-import { Rest } from "../rest/Rest";
+import Rest from "../rest/Rest";
 import { withRouter } from "react-router-dom";
 import ScriptActionsModuleModal from "../modal/ScriptActionsModuleModal";
 import Loading from "../Loading";
diff --git a/src/constants/Vocabulary.js b/src/constants/Vocabulary.js
new file mode 100644
index 0000000..9f9c5ee
--- /dev/null
+++ b/src/constants/Vocabulary.js
@@ -0,0 +1,64 @@
+export const S_PIPES = "http://onto.fel.cvut.cz/ontologies/s-pipes";
+export const S_PIPES_VIEW = "http://onto.fel.cvut.cz/ontologies/s-pipes-view";
+
+export const EXECUTION_MODULE_DTO = `${S_PIPES}/execution-module-dto`;
+export const EXECUTION_FUNCTION_DTO = `${S_PIPES}/execution-function-dto`;
+export const SCRIPT_DTO = `${S_PIPES}/script-dto`;
+export const QUESTION_DTO = `${S_PIPES}/question-dto`;
+export const ROOT_QUESTION = `${S_PIPES}/has-root-question`;
+export const SCRIPT_PATH = `${S_PIPES}/has-script-path`;
+export const MODULE_DTO = `${S_PIPES}/module-dto`;
+export const DEPENDENCY_DTO = `${S_PIPES}/dependency-dto`;
+export const MOVE_MODULE_DTO = `${S_PIPES}/move-module-dto`;
+export const ABSOLUTE_PATH = `${S_PIPES}/has-absolute-path`;
+export const MODULE_URI = `${S_PIPES}/has-module-uri`;
+export const RULE_COMMENT = `${S_PIPES}/rule-comment`;
+export const ERROR_MESSAGE = `${S_PIPES}/error-message`;
+export const MODULE_LOG = `${S_PIPES}/module-log-dto`;
+export const MODULE_TYPE_URI = `${S_PIPES}/has-module-type-uri`;
+export const TARGET_MODULE_URI = `${S_PIPES}/has-target-module-uri`;
+export const TRANSFORMATION_ID = `${S_PIPES}/has-transformation-id`;
+export const DISPLAY_NAME = `${S_PIPES}/has-display-name`;
+export const START_DATE_UNIX = `${S_PIPES}/has-pipeline-execution-start-date-unix`;
+export const FINISH_DATE_UNIX = `${S_PIPES}/has-pipeline-execution-finish-date-unix`;
+export const EXECUTION_DURATION = `${S_PIPES}/has-pipeline-execution-duration`;
+export const TRANSFORMATION = "http://onto.fel.cvut.cz/ontologies/dataset-descriptor/transformation"; // left unchanged
+export const FUNCTION_URI = `${S_PIPES}/has-function-uri`;
+export const FUNCTION_NAME = `${S_PIPES}/has-function-local-name`;
+export const ONTOLOGY_URI = `${S_PIPES}/has-ontology-uri`;
+export const SCRIPT_NAME = `${S_PIPES}/has-name`;
+export const SCRIPT_CREATE_DTO = `${S_PIPES}/script-create-dto`;
+export const SCRIPT_ONTOLOGY_CREATE_DTO = `${S_PIPES}/script-ontology-create-dto`;
+export const MODULE_FROM_PATH = `${S_PIPES}/has-module-from-path`;
+export const MODULE_TO_PATH = `${S_PIPES}/has-module-to-path`;
+export const RENAME_MODULE = `${S_PIPES}/rename-module`;
+export const EXECUTION_INFO = `${S_PIPES}/module-execution-info`;
+export const EXECUTION_VARIABLE = `${S_PIPES}/execution-variable-dto`;
+export const MODULE_VARIABLES = `${S_PIPES}/has-module-variables`;
+export const MODULE_EXECUTION_DURATION = `${S_PIPES}/has-module-execution-duration`;
+export const MODULE_EXECUTION_START_DATE = `${S_PIPES}/has-module-execution-start-date-unix`;
+export const MODULE_EXECUTION_FINISH_DATE = `${S_PIPES}/has-module-execution-finish-date-unix`;
+export const MODULE_INPUT_PATH = `${S_PIPES}/has-module-input-path`;
+export const MODULE_OUTPUT_PATH = `${S_PIPES}/has-module-output-path`;
+export const PARAMETER = `${S_PIPES}/has-parameter`;
+export const FUNCTION_LOCAL_NAME = `${S_PIPES}/has-function-local-name`;
+
+export const X = `${S_PIPES_VIEW}/has-x-coordinate`;
+export const Y = `${S_PIPES_VIEW}/has-y-coordinate`;
+export const EDGE = `${S_PIPES_VIEW}/consists-of-edge`;
+export const SOURCE_NODE = `${S_PIPES_VIEW}/has-source-node`;
+export const DESTINATION_NODE = `${S_PIPES_VIEW}/has-destination-node`;
+export const NODE = `${S_PIPES_VIEW}/consists-of-node`;
+export const COMPONENT = `${S_PIPES_VIEW}/component`;
+export const OUTPUT_PARAMETER = `${S_PIPES_VIEW}/has-output-parameter`;
+export const INPUT_PARAMETER = `${S_PIPES_VIEW}/has-input-parameter`;
+export const GROUP = `${S_PIPES_VIEW}/group`;
+export const MODULE_VARIABLE_NAME = `${S_PIPES_VIEW}/has-variable-name`;
+export const MODULE_VARIABLE_VALUE = `${S_PIPES_VIEW}/has-variable-value`;
+export const TYPE = `${S_PIPES_VIEW}/has-module-type`;
+
+export const LABEL = "http://www.w3.org/2000/01/rdf-schema#label";
+export const ICON = "http://topbraid.org/sparqlmotion#icon";
+export const COMMENT = "http://www.w3.org/2000/01/rdf-schema#comment";
+export const ANSWERS = "http://onto.fel.cvut.cz/ontologies/documentation/has_answer";
+export const OBJECT_VALUE = "http://onto.fel.cvut.cz/ontologies/documentation/has_object_value";