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.
pinch painch punch paunch poncho punchy panache panocha panoche paunchy penoche penuche penuchi punish
inch painch chinch pinch cinch winch finch kench launch lynch munch bunchy bench manche raunch lunch punch concha wrench ancho snitch dunch wench honcho eunuch hunch paunchy tench niche concho paunch conchy haunch quench raunchy bunch synch poncho cancha punchy conch rancho ranch chinchy
pin pain spinny spine pein pian piano pina pine piney pinna pinnae pinny piny pion epinaoi opine spin spinney spiny