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.
hyponeas hyponoias pones ponies peones pons peonies pinas peans pions poons ponce panes punas pines penes peons paeans pinnas pannes pounce paeons pawnees pinnies pennies panacea pins puns pens pans pians peens pawns peins pains pence penis pennis pensee pianos
hyponeas ones sones pones peones bonnes nonas monies phonies nones leones monas boonies phones phoneys donas donnas tones tonnes unease looneys hones bones goonies ponies peonies honeys moneys loonies koines jones lioness gooneys guineas conies coneys cones zones donees tineas tonneaus toonies uneasy ons
hyponea hyponoia hypopnea yapon yupon