Company's rhymes with:
accompanies, companies, companies', accompanies, companies, companies', accompanies, companies, companies', accompanies, companies, companies'
Company's sounds like:
campanis, camping, champion's, championing, champions, chimpanzee, chimpanzees, chomping, combines, combing, combining, comeuppance, comfinance, companies, companies', companies's, companions, confines, confining, connivance, conniving, convenes, convenience, conveniences, convening, conveyance, conveying, convince, convinces