diff --git a/core/pom.xml b/core/pom.xml
index c3efb7ea..86e23439 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -35,6 +35,11 @@
             <artifactId>hamcrest</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.github.npathai</groupId>
+            <artifactId>hamcrest-optional</artifactId>
+            <scope>test</scope>
+        </dependency>
 
         <dependency>
             <groupId>jakarta.json</groupId>
diff --git a/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/Vocabulary.java b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/Vocabulary.java
new file mode 100644
index 00000000..abe04c48
--- /dev/null
+++ b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/Vocabulary.java
@@ -0,0 +1,37 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core;
+
+import io.github.sebastiantoepfer.jsonschema.core.keyword.KeywordType;
+import java.net.URI;
+import java.util.Optional;
+
+/**
+ * see: https://json-schema.org/draft/2020-12/json-schema-core.html#name-schema-vocabularies
+ */
+public interface Vocabulary {
+    URI id();
+
+    Optional<KeywordType> findKeywordTypeByName(String name);
+}
diff --git a/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabulary.java b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabulary.java
new file mode 100644
index 00000000..d5fd1c35
--- /dev/null
+++ b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabulary.java
@@ -0,0 +1,70 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.impl.keyword;
+
+import io.github.sebastiantoepfer.jsonschema.core.Vocabulary;
+import io.github.sebastiantoepfer.jsonschema.core.keyword.DefaultAnnotation;
+import io.github.sebastiantoepfer.jsonschema.core.keyword.Keyword;
+import io.github.sebastiantoepfer.jsonschema.core.keyword.KeywordType;
+import jakarta.json.JsonValue;
+import java.net.URI;
+import java.util.Optional;
+
+final class BasicVocabulary implements Vocabulary {
+
+    @Override
+    public URI id() {
+        return URI.create("http://https://github.com/sebastian-toepfer/json-schema/basic");
+    }
+
+    @Override
+    public Optional<KeywordType> findKeywordTypeByName(final String name) {
+        KeywordType keywordType =
+            switch (name) {
+                case "type" -> new KeywordType() {
+                    @Override
+                    public String name() {
+                        return "type";
+                    }
+
+                    @Override
+                    public Keyword createKeyword(final JsonValue value) {
+                        return new Type(value);
+                    }
+                };
+                default -> new KeywordType() {
+                    @Override
+                    public String name() {
+                        return name;
+                    }
+
+                    @Override
+                    public Keyword createKeyword(final JsonValue value) {
+                        return new DefaultAnnotation(name(), value);
+                    }
+                };
+            };
+        return Optional.of(keywordType);
+    }
+}
diff --git a/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/Keywords.java b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/Keywords.java
index 33901132..2a81121e 100644
--- a/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/Keywords.java
+++ b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/Keywords.java
@@ -23,18 +23,22 @@
  */
 package io.github.sebastiantoepfer.jsonschema.core.impl.keyword;
 
-import io.github.sebastiantoepfer.jsonschema.core.keyword.DefaultAnnotation;
 import io.github.sebastiantoepfer.jsonschema.core.keyword.Keyword;
 import jakarta.json.JsonValue;
 import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Stream;
 
 public final class Keywords {
 
     public static Keyword createKeywordFor(final Map.Entry<String, JsonValue> property) {
-        return switch (property.getKey()) {
-            case "type" -> new Type(property.getValue());
-            default -> new DefaultAnnotation(property.getKey(), property.getValue());
-        };
+        return Stream
+            .of(new BasicVocabulary())
+            .map(vocab -> vocab.findKeywordTypeByName(property.getKey()))
+            .flatMap(Optional::stream)
+            .findFirst()
+            .map(keywordType -> keywordType.createKeyword(property.getValue()))
+            .orElseThrow();
     }
 
     private Keywords() {}
diff --git a/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordType.java b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordType.java
new file mode 100644
index 00000000..85f08a56
--- /dev/null
+++ b/core/src/main/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordType.java
@@ -0,0 +1,37 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.keyword;
+
+import jakarta.json.JsonValue;
+import java.util.Objects;
+
+public interface KeywordType {
+    default boolean hasName(String name) {
+        return Objects.equals(name(), name);
+    }
+
+    String name();
+
+    Keyword createKeyword(JsonValue value);
+}
diff --git a/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabularyTest.java b/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabularyTest.java
new file mode 100644
index 00000000..63eb5e96
--- /dev/null
+++ b/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/impl/keyword/BasicVocabularyTest.java
@@ -0,0 +1,59 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.impl.keyword;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+import com.github.npathai.hamcrestopt.OptionalMatchers;
+import io.github.sebastiantoepfer.jsonschema.core.keyword.KeywordType;
+import java.net.URI;
+import org.junit.jupiter.api.Test;
+
+class BasicVocabularyTest {
+
+    @Test
+    void should_return_a_fake_id() {
+        assertThat(
+            new BasicVocabulary().id(),
+            is(URI.create("http://https://github.com/sebastian-toepfer/json-schema/basic"))
+        );
+    }
+
+    @Test
+    void should_return_the_type_keywordtype() {
+        assertThat(
+            new BasicVocabulary().findKeywordTypeByName("type").map(KeywordType::name),
+            OptionalMatchers.isPresentAndIs("type")
+        );
+    }
+
+    @Test
+    void should_return_the_custom_annotation_for_unknow_keyword() {
+        assertThat(
+            new BasicVocabulary().findKeywordTypeByName("unknow").map(KeywordType::name),
+            OptionalMatchers.isPresentAndIs("unknow")
+        );
+    }
+}
diff --git a/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordTypeTest.java b/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordTypeTest.java
new file mode 100644
index 00000000..6a3d95df
--- /dev/null
+++ b/core/src/test/java/io/github/sebastiantoepfer/jsonschema/core/keyword/KeywordTypeTest.java
@@ -0,0 +1,52 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 sebastian.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package io.github.sebastiantoepfer.jsonschema.core.keyword;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+import jakarta.json.JsonValue;
+import org.junit.jupiter.api.Test;
+
+class KeywordTypeTest {
+
+    @Test
+    void should_know_his_name() {
+        assertThat(new TestKeywordType().hasName("test"), is(true));
+        assertThat(new TestKeywordType().hasName("unknown"), is(false));
+    }
+
+    private static class TestKeywordType implements KeywordType {
+
+        @Override
+        public String name() {
+            return "test";
+        }
+
+        @Override
+        public Keyword createKeyword(JsonValue value) {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+    }
+}