Hwan's rhymes with:
swann's, swans, taiwan's, afrikaans, alphonse, azerbaijan's, batons, bonn's, brons, bronze, come-ons, cons, don's, dons, donze, fons, fonz, goings-ons, han's, hons, jahns, john's, johns, jon's, kahan's, kahn's, kazakhstan's, khan's, konz, lat-lons, lian's, livan's, lons, milan's, nithuekan's, omans, ons, pons, put-ons, ron's, run-ons, saint-saens, salons, schons, sohns, sons', spawns, st-johns, swann's, swans, taiwan's, teheran's, teherans, tehran's, tehrans, try-ons, vons, yuan's, yvonne's
Hwan's sounds like:
haimes, haines, hains, hamanaka, hamas, hamas', hamasaki, hames, hamish, hammac, hammack, hammas, hammas', hammas's, hammes, hammock, hammocks, hammons, hams, han's, hanak, hanas, hance, hanchey, hancock, hancock's, hancox, hanes, hang, hangs, hani's, haning, hanisch, hanisee, hanish, hank, hank's, hanke, hankes, hankey, hanko, hanks, hanky, hanna's, hannahs, hannes, hannig, hanning, hannis, hannoch, hanoi's, hans, hansa, hansche, hanshaw, hanshew, hanukkah, hanukkah's, hanukkahs, hanus, hanwa's, hany's, hawaiians, hawing, hayenga, haying, haymes, haynes, heims, heinecke, heines, heinicke, heinig, heinisch, heinke, heinous, heins, heinz, heinz's, heinze, heming, hemingway, hemingway's, hemming, hemminghaus, hemmings, hems, hen's, hence, hench, henes, heng, henhouse, henk, henke, henkes, henneke, hennes, henness, hennessee, hennessey, hennessey's, hennessy, hennick, hennig, henning, hennings, hennis, hens, hensch, hense, henshaw, henske, henze, hewing, hewins, heying, heyman's, heymann's, hiems, himes, hinch, hinchey, hinck, hines, hing, hinge, hinges, hingis, hink, hinojos, hinojosa, hinsch, hinshaw, hinz, hinzack, hinze, hmong, hoang, hoeing, hoenig, hohensee, homac, homage, homages, homans, home's, homes, homes', homesick, homing, hommes, homonyms, homozygous, homs, homsey, honcho, honeck, hones, honeymoons, honeys, hong, hongwei, honig, honing, honk, honky, hons, honse, honshu, how-much, hoying, huaneng, huang, huenink, human's, humana's, humanize, humanizes, humanness, humans, humenik, humes, humke, humming, humongous, hums, humus, hunch, hunches, huneke, hung, hunk, hunke, hunks, hunky, hunza, hwang, hwang-ho, hyams, hyannis, hyenas, hymans, hymas, hymes, hymies, hymns, hynek, hynes, hynes's