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.
graced grazed greased grassed crazed coerced groused creased grossed cuirassed cursed crossed crusade goriest cruzado crusado coursed cristae cruised caressed caroused grisette
raced terraced traced braced graced truced triacid crazed tierced razed phrased hydracid proceed precede peracid greased brazed forced coerced farced recede triced arrased grazed rased creased priced hyperacid arced sourced riced erased pierced characid
grace grass grassy grays graze grease greasy rackers