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.
paseos pases passes pauses peases pesos puses pisos poses poaceous pusses posses poises peises paisas pisses passus piceous poesies possess pussies psis poussies paces psoas peaces pizzas posies piazzas
paseos sos gessoes missies easies busses kussos bassos sues looses hissies meioses oses beses bosses bouses caseous mioses feases houses cusses baases mousses assess hawses reassess gooses coses resows passes nooses peases liaises nouses esses basses fuses psoas gasses lases isseis bases phases asses biasses buses guises hoses causes josses kisses lassies nauseas touses ceases tasses vises daisies tissues doses pesos tusses ruses wises raises wusses chaises chases possess chausses chesses chooses chouses roses yeses dieses tawses pisos gaseous sissies leses posies cosies douses niseis resees gnoses misos pusses rises cissies lyses musses sassies mosses lassos sises vases susses poaceous poises losses nesses cases poussies resews pases leases pauses messes gases kneesies quasses fesses lessees issues loesses hussies fusses sees hoises physes soys jesses sous bises hisses rases biases sows coseys loses fusees hoseys masses gussies bossies mises causeys mouses caseose eses sews eases fosses muses seis bowses cuisses lassoes newsies busies guesses seas misses reuses sisses moseys poses gausses dosses osseous reissues lasses gneisses puses cesses piceous fasces noises sasses nauseous louses seises noses souses pisses poesies cussos tassies oases uses tosses wrasses dowses koussos daises teases disses peises tussehs rouses pussies dassies wisses wussies chaoses posses chasses cheeses chiauses choses rooses chowses yesses
paseo pase pas spas paps pose pace pacey paisa paise pass passe passee peas pease pias pause apse paws spaes pays upas