# Semantic Search (Classes & Properties)
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##### Semantic Search (Classes & Properties)
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| Operation | Method | Endpoint | Request Content-Type | Response Accept | Notes | 
| --- |--- |--- |--- |--- |--- |
| Keyword Search | GET | `/ontologies/{id}/search?q={term}` | — | `application/json` | Matches `rdfs:label`, `skos:altLabel`, `rdfs:comment` | 
| Semantic Similarity Search | POST | `/ontologies/{id}/search/semantic` | `application/json` | `application/json` | Vector-based search using embedding of class/property descriptions | 
| Subclass Traversal Search | GET | `/ontologies/{id}/classes/{classIRI}/subclasses` | — | `application/json`, `text/turtle` | Returns full subclass hierarchy; `?depth=` param for bounded traversal | 
| Combined Search | POST | `/ontologies/{id}/search/hybrid` | `application/json` | `application/json` | Combines subclass structure \+ semantic similarity; returns ranked results with `rdfs:subClassOf` path |