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.
corvid carved corvet craved curved gravid gravida gravidae corvette cravat curvet graved groved gravity greaved grieved grooved
fervid corvid cervid varved carved curved gravid gravida nerved provide served
corvee carve corf coryphaei coryphee crave curve curvey curvy scorify