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.
caeoma coma cameo comae comma cam cambia come camo came gama comb coomb combo gamba commy gamay gamma combe cammie commie coombe gambia goombah goombay cum cwm gam
caeoma bema hyphemia gemma coma comae comma lemma louma momma nema noma pneuma soma douma