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.
sources surcease soroses saroses sorosis seeresses sericeous cercis cerises ceruses serosas xeroses xeruses
sources hyraces trices tierces terces purses pierces nurses mercies graces cruces courses coerces carices varices furzes farcies races farces burses braces bourses boraces rices curses merces murices orrices prices forces terraces traces truces