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.
bimas bimahs biomass bemas bimbos biomes bams bimboes bums beams bombs booms bemuse bombes bamboos
bimas pimas limas simas mas commas limbas maws hims comas moas lamias mays gummas gambias masa nims mass amahs mammas amias gamays mamas nemas shammas omasa chimes whimsy camas mimes nomas cymas limes pumas lamas rims limbs somas zamias dimes mommas maes biomass amass amas cumbias caeomas times lumas gammas limos gambas hyphemias loumas camass gamas maims llamas mambas rumbas doumas sims bimahs bemas lemmas aims rimes vims pneumas summas sambas zymase dims dumas whims chimbs shamas shims