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.
grinned groined grained grind groaned greened grand crannied kerned corned kirned garnet craned gurnet ground grandee grenade cairned crooned grantee granite crowned crinoid crinite careened carinate guarantee grunt grant carnet cornet cornute coronet crenate crownet crunode granita kernite
grinned rained trined drained reigned reined ruined arraigned brained branned brined girned cairned crannied grained groined kirned deraigned trained shrined
grin grain grainy grannie granny groin