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.
conioses coniosis concise conscious coynesses cansos kenosis kinases kineses gooeynesses guanases quinsies gaynesses keennesses
conioses anises teniases zoonoses penises mannoses lionises coniosis genoises geniuses ionises finises nouses gneisses noses nooses noises niseis gnoses hypnoses rinses taeniases tennises