What is the homonym for the word your?

The Words with the same pronunciation are technically "homophones."

YOUR - personal possessive adjective (pronoun yours)

YOU'RE - contraction of the Words "you are"

YORE - (archaic, literary) the far past, bygone times, e.g. days of yore

*Proper noun : YOR, The Hunter from the Future (1983 Reb Brown film)