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.
gamb gamba gambe gam gambia game gaum gama gamy gammy gamma gamay gumbo gombo gamey cambia cam gum goombah goombay comb came camo kame kami cameo combe combo coomb gumma gummy kombu