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.
quinoas quins quoins quinsy guineas kinos kinas quince queans queens kinase guanos guanase guanays kins guns kanas guans gains kenos kains kines coins koans cains cannas canoes koines gainsay goannas gunnies
quinoas anoas chinas winoes dinos pinnas pianos nonas linos lianas kinos kinase kinas guineas genoas heinous vinous vinos vinas finos minas hyponoias pinas ruinous tineas winos chinos nos ins
quinoa quin quoin equine squinny