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.
crownet crowned coronet cornet carnet crooned coronate carronade craned gurnet corned garnet crunode current courant groined cornute currant groaned crinite crenate cairned courante crannied craniate coronoid careened carinate grunt grant kirned kerned ground coranto grantee crinoid greened cornuto granita grandee grained grinned granite kernite grenade
crownet baronet browned frowned hornet cornet coronet crowned preowned drowned
crown corona coronae crone crony croon grown