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.
coombs coombes combs combos combes comas comes goombahs goombays comose kombus comous commas gombos commies cumbias caeomas cams cwms camas cames camos gambs koumys camisa gumbos cameos camise gambes camass gambas koumis cammies gambias koumiss koumyss
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
coombe coomb coma comae comb combe combo come comma commie commy goombah goombay