I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
creases crases greases creeses cresses caresses cruses crazes crises crasis curses corses carses cuirasses cruises crazies crosses grasses courses curacies carouses carassows curassows grazes cruces krises crisis crozes gorses coryzas carices coerces grosses kerseys grouses griseous karosses coriaceous graces grecize
boreases whereases greases ureases creases diureses seeresses diaereses prases reraises parses perses carses phrases morasses tresses caresses rases crases arses heiresses frasses harasses fraises foresees erses erases cuirasses urases duresses terrases peeresses hearses resews raises pareses wrasses phereses braises marses creeses arrases grasses cresses verses gyrases brasses reuses resees praises presses cereuses surcease diereses dresses hydrases trasses uraeuses charases
crease creasy greasy carassow cares caress cores crass craws cress creese cressy crews cries curassow cures grease acres