corp's, corpse, arps, bancorp's, citicorp's, citicorps, citicorps', corp's, corpse, garp's, garps, gencorp's, harps, keycorp's, mcorp's, newscorp's, sharp's, sharps, tarps, tharpe's, unicorp's
wharf's, wharfs, wraps
What rhymes with warps?