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.
combs coombs combes combos coombes comes comas comous commas comose kombus gombos cumbias commies caeomas cwms cams goombahs goombays camas cames gambs camos gambas koumys koumis cameos gambes camass camisa camise gumbos cammies gambias koumiss koumyss gams gums
bombs wombs combs tombs coombs oms kombus ohms jumbos gambes homos comes limbas combos loams gombos biomes jambs caeomas momes noms comas limbs domes nomes umbos tomes duomos dumbos dooms zombis iambus somas sambas rooms roams pomos poems jambes mambas gambs mambos lambs bimbos combes bombes sambos iambs gumbos limbos homes limbus booms nomas whomso nimbus toms looms nomos gnomes coombes momus gambas dumbs doums doms zooms soms moms numbs roms poms pomes ambos foams rumbas chimbs
comb combe combo cambia coma comae come comma commie commy coomb coombe cumbia gombo kombu