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.
tenon tannin
guenon xenon tenon canon bunion renown pinon pennon ninon minion annona wanion ronion inion venin phonon fanon reunion ionone known renin munnion noun noon none nona cannon gonion quinone anion onion pinion anon neon fanion union chinone
ten taenia taeniae teen teeny tenia teniae steno