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.
terce tierce terrace terse truce trace trice terries trees tiers tears terras terais dearies derries terrazzo tars tors tres
fierce terce coerce pierce tierce peres haeres terse brace farce mercy seres perse force quaeres cerci truce trace terrace feres grace farcie meres price ceres source rice verse heres orrice race trice wheres
tear teary terai terra terrae terry tier stere stereo tetra tetri uteri