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.
steams stems stemmas stums sedums stimes stomas stimies stymies sodoms sodiums sodomies
teams reteams steams madams tatamis madames stems dams goddams retems oedemas adeems redeems odeums items deems edemas tams modems dames tamis tames demos demes teems diadems totems
steam steamy satem stem stemma stemmy esteem osteoma