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.
guanine guanin canine gunnen quinine conine gonion guenon quinin coniine quinina quinone canon conin kinin cannon
guanine canine nine wanion pennine nannie anion banian fanion venine genuine coniine quinine leonine panini panino conine tannin guanin hyenine
guan guanay guano iguana gan gun