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.
heresies heiresses hearses hearsays heroizes horses harasses harissas heroicize
phoresies heresies duresses diuresis dieresis diaeresis seeresses prissies peeresses paresis pareses cresses creeses caresses pheresis heiresses phereses foresees brassies resize resews resees presses prossies diaereses diereses diureses dresses tresses
heresy heres hers haeres hares hears hearsay hearse heiress heirs heroes heros hires hoers