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.
carroch caroch caroach caroche carritch crotch crouch currach curch creche crutch grouch cratch currish grouchy crash crush creesh garish grutch kerchoo
carroch roach rotch birrotch broach broche brooch caroach caroch caroche crotch crouch currach grouch soroche troche