* "Close" as an adjective meaning "near": The homonym is "cloze", though this word is rarely used. It's an archaic word for "clothes."
* "Close" as a verb meaning "to shut": The homonym is "cloze", again an archaic word. This time it refers to a type of test where students fill in missing words.
If you're looking for a synonym for "close" rather than a homonym, there are several options depending on the intended meaning. For example:
* Near: nearby, adjacent, proximate
* Shut: shut, shut off, seal, lock
Please provide more context about how you're using the word "close" so I can give you a more specific answer.