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.
gamp camp campi campo campy guimpe comp kemp compo
amp vamp camp gamp lamp ramp samp damp tamp champ
gam gama gamay gamb gamba gambe gambia game gamey gamma gammy gamy