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.
charros charrs churros chars chares chairs charas churrs chirrs chiros cheeros chirres cherries cheerios shares shirrs choirs chirus cheers chores chorus shears choreas chorizo sharias sherris sherries shariahs shris sheers shiers shires shoers shores shrews tiaras
charros morrows barres arrows arris pharos karroos marrows burrows narrows arose parous cirrose taros saros arras barrows churros barrios carrs kaross borrows farrows ferrous furrows gharris harrows burros morros karoos gnarrs pareos parrs cirrous tarres sorrows charrs faros yarrows ars
charr charro charry char chair chare chary cherry chirr chirre churr churro