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.
guenons guanins quinones canons cannons quinins canoness canonise conenose goneness guanines quininas conins kinins conines
guenons tenons xenons conenose reunions nouns noons nones nonas cannons munnions renins onions pinions pinons renowns knowns wanions quinones fanions ronions ninons annonas anions bunions neons pinones pennons fanons canons unions minions ionones inions venins venenose phonons chinones