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.
poboys pubs pubes pubis
boys poboys lowboys doughboys cowboys bos bys buys baboos booboos niobous hobos bows beys rebuys boubous bays kobos obeys boos gibbous yobboes buboes taboos goboes abbeys gibbose gobos lobos buoys abys abyss bobs ribose abos boas bios boss oboes hoboes syboes yobbos