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.
burnout burnt brownout burnet brent brunt brant burned brunet baronet bornite braunite brunette brand barned brandy brined brained branned browned
turnout burnout rainout runout brownout cornute cornuto
burn bourn bourne buran burin burnie