stand
There are two possibilities: Rise is a homophone of "ryes." Bear (to withstand) is a homophone of "bare."
A close homophone for 'defy' would be deify, to promote someone to the status of a god.Synonyms for 'defy' include: withstand, resist, stand up to, stand for, challenge, and fight.
The answer is that there is no homophone for can, but can is a homonym.
Him is the homophone for hymn.
Your is a homophone of you're. In some dialects, yore is another homophone.