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.
cosign cosine cousin casein casini casino cuisine cassino cassine cassina cozen gossan caisson cassena cassene gossoon quassin
assign resign sign design cosign reassign sin mission cuisine sinh eosine sine resin passion casino eosin cassine fusain sain essoin cassina lysin session rosin fission raisiny raisin cession lysine cousin hessian cosine casein rosiny ossein scission cassino resiny basin casini rusine sasin seisin quassin
cosie cos coos cosey coss cosy cows coys cozie cogs