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.
guavas guvs kavas kavass guffaws kvas caves gaffs guffs kivas kvass cavies cuvees gaffes quaffs quaighs
favas javas kavas lavas guavas vas caves lavs vivas kavass naves kvas pavis soaves divas oaves weaves vase favus raves saves zouaves devas tavs waves shaves shivahs uveas sheaves aves knaves haafs laves vaws vavs loaves kivas novas foveas reaves deaves mavis kvass avos haves heaves eaves paves vaus leaves faves vasa shivas