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.
reassume resume raceme
assume coassume reassume hassium lissome possum resume sum
reissue wrasse ureas tress dressy rears greasy grassy grass cressy cress creasy crease crass frass brassy brassie brass areas grease press dress trass tressy urease ras res