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.
pesos pisos psoas paseos peases peises psis possess poesies paces puses puces poses pases pisses pusses pieces pauses posies peaces passes poises passus posses paisas piceous pussies poaceous poussies
pesos sos cheeses diesis resows reassess possess eses sous sows soys assess bassos beses cess misos koussos caseose kussos lassos leses mesas gneissose paseos cussos noesis pisos psoas recess dieses wiseass yeses
peso pes pepos opes apes psoai psoae poesy pies piso pews peise pehs pees pease peas peps