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.
quinin quinina quinine quinone kinin guanin guanine conin canine conine gonion guenon gunnen
kinin quinin linin anion aeonian pinion panino onion munnion ninny banian benign venin bunion leonine guanin renin reunion tannin wanion gonion fanion guanine inion ronion conin minion pinon pennine canine panini rennin ninon union quinina venine nine linen quinine eonian conine hyenine
quin quinoa guinea quoin equine quicken squinny