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.
genua genu genoa gen gene gien genie genii gin hygiene jean jeon
genua hymenia hyaena taenia xenia sienna senna scena penna menu genu faena genoa henna venue venae vena veena duenna tenia hyena