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.
herniate hornito hereinto hereunto horned hornet hairnet horrent
craniate herniate uranite serenate preunite reunite ruinate arenite bornite braunite carinate crenate coronate crinite granite kernite marinate ornate perennate pronate ternate urinate
hernia herniae hern herein heroin heroine heron