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.
yttrium trim trauma trumeau term drum tram durum tryma tarama dayroom tearoom teraohm
yttrium trim barium bohrium corium curium cerium zoarium rim rum