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.
grunt grant gurnet garnet ground granite grantee granita guaranty grind grand guarantee cornet carnet greened courant grained groaned crownet cornute current crinite cornuto coranto coronet currant grinned grandee groined crenate crunode grenade kernite carinate coronate courante couranto craniate
brunt grunt runt hornet print learnt brunet jurant gerent arrant burnet runty brant brent garnet rent hydrant truant warrant rant burnt cornet courant front current rerent parent forint gurnet currant tyrant torrent errant grant carnet gerund horrent hereunto hairnet whereunto
garni gran grana grannie granny grin gurney