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.
navel naively naval novel navally novella novelle novelly nouvelle nival
gavel ravel navel level uveal kvell suavely cavil reveal naval naively lovely lively veal hovel foveal favela bevel vela veil novel kevel revel devel shovel
nave knave naevi naive navvy navy neve