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.
sums sumos summas sims soms simas somas smews semis semes seems seams sambas sambos samosa simious smaze zooms
bums hums geums gaums gums lums mums neums rums sums doums chums