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.
carouses carses cruses cruises grouses courses crosses karosses caresses crases crozes curses crises corses cruces cresses grosses creeses creases carices carassows cuirasses gorses crazes krises grosze crisis crasis coriaceous kerseys grasses greases coerces crazies gracious griseous curacies curassows grosz graces grazes groszy
rouses arouses grouses carouses rearouses burses eroses pharoses varuses viroses corses roses bourses reuses browses courses viruses ruses ceruses soroses xeruses drowses torses trusses uruses choruses broses cruises prosses karosses proses curses rooses grosses horses gorses cruses neuroses bruises peruses crosses purses nurses cereuses saroses xeroses drosses druses trioses uraeuses worses chorusses