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.
consul consol console counsel counselee conceal council cancel gunsel
consul ensoul hansel insoul consol counsel gunsel mensal pensil censual sensual tinsel tonsil unusual
cons coons sconce cognize cognise icons icones coyness conus cans conns conies coneys cones coins canso scones