| Query | Top-1 | Why this works |
|---|---|---|
wlan | apple-docs://corewlan (rank 1) | wlan appears in CoreWLAN's framework identifier directly; FTS5 finds it without needing the synonyms table |
mpsgraph | apple-docs://metalperformanceshadersgraph (rank 1) | The synonym mpsgraph is a partial-token-match of the framework's identifier; the long compound name's BM25F favours the exact-prefix match |
sprite | apple-docs://spritekit (rank 1) | sprite is part of spritekit; literal substring match |
location | apple-docs://corelocation (rank 1) | location is part of corelocation; literal substring match |
All four wins are explainable by literal-substring or prefix-token matching, not by synonym lookup. The synonyms table may not be contributing to these results at all.