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.
chiauses chausses chases chaises chaoses chasses chouses choses cheeses chesses choices chooses chowses chassis
causes pauses chiauses uses quasses musses basses rouses passes lasses pusses chasses chaoses liaises eases easies fusees fauces masses hawses wusses mousses teases rases cusses tasses daises souses sasses wrasses gasses buses vases fasces fusses paseos houses nouses tusses peases puses leases ruses louses guises feases biasses baases nauseas gases bases causeys touses gausses bouses muses mouses reuses lases busses fuses susses sauces ceases raises cases tawses douses asses busies biases pases gauzes chaises oases chases chausses phases chouses