Many analogies link an object to what it does or what it is used for. The bridge is a purpose verb.
The function bridges
| Bridge | Example |
|---|---|
| "X is used to Y" | SCISSORS : CUT |
| "X is used for Y" | KEY : LOCK ("a key is used to open a lock") |
| "the job of X is to Y" | FILTER : PURIFY |
The two words are usually a tool and its action, or a tool and its target.
Keep the purpose exact
Two tools can act on the same area but do different jobs. A broom sweeps; a mop wipes wet floors. If the bridge is "is used to sweep", only a sweeping tool matches.
- LAMP : LIGHT "A lamp is used to give light."
- A weak match like CANDLE : WAX fails: wax is what a candle is made of, not what it is for.
Name the purpose precisely. "Used in the kitchen" is too broad; "used to cut" picks exactly one answer.
Function vs. material
A frequent trap pairs a thing with what it is made of (CANDLE : WAX, to fit RING : GOLD) instead of what it is for. Decide whether the bridge is purpose ("used to") or material ("made of") before matching.