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.
corsac crisic carsick
corsac pharisaic parsec prosaic
corse cors kors gorse curs crus cross cris cressy cress crass cowries course coryza corries cores coirs coerce coarse carse cars crissa crosse cruse curse gorsy scores