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.
tryma trauma tarama term tram trim trumeau drama derma diorama tearoom teraohm yttrium derm dorm dram drum
tryma aroma herma hermae hermai corymb grama karma korma neuroma prima derma diorama drama tarama chroma