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.
carnet garnet cornet cairned coronet crownet carinate careened carronade gurnet corned craned courant crinite coranto crowned cornuto current cornute crunode currant crooned craniate guaranty courante couranto crannied grunt grant guarantee kirned kerned grandee grantee crenate greened crinoid groined granite granita grinned grained kernite groaned coronate coronoid
burnet carnet cornet garnet hairnet hornet gurnet grunt darned print learned current corned gerent cairned warned earned turned jurant brunet grant front horned kerned girned mourned burnt rerent brunt crownet yarned hydrant churned errant arrant baronet torrent brent rennet reearned barned horrent learnt forint durned tyrant warrant courant coronet currant rent kirned brant parent burned sorned runt rant yearned
carney carn carnie carny crane acarine corny garni cornua crony cornu cranny cornea cairn corn cairny crania carrion crone carinae curn carina karn careen ocarina