Unverified50% confidenceconcept_definitionExact time
`VectorStore` is responsible for vector storage and similarity retrieval (such as `similarity_search`) and is a relatively low-level storage interface; `Retriever` is a more general retrieval interface that only exposes `get_relevant_documents` (or `invoke` in newer versions), and any object that can return documents based on a query can be a Retriever, not necessarily a vector store.
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10/26/2026
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