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.
quinina quinin quinine quinone kinin guanin guanine conin canine conine gonion guenon gunnen
quinina inion kinin quinin quinine linin minion pinion
quin quinoa quoin equine squinny