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.
compo comp campo camp campi campy gamp kemp
compo campo comp pomp romp tempo whomp chomp shampoo
coma comae comb combe combo come comma commie commy coomb coombe