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.
groined grinned grained groaned grind ground greened crooned crowned grand corned gurnet kirned craned garnet kerned grenade coronet grantee crownet crinoid granite cairned crinite grandee coronoid coronate careened carinate crannied carronade grant guarantee grunt carnet cornet cornute crenate crunode granita kernite
groined frowned trined drowned drained sorned marooned browned grinned crowned crooned corned cairned girned ironed horned rained reigned brined brained arraigned ruined reined grained groaned kirned preowned deraigned droned trained shrined
groin grin grain grainy groan grown groyne