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.
poularde poulard pollard paillard pillared polarity pilloried
poularde lard cellaret foulard mallard glared lardy liard billiard blared bollard flared laird paillard claret halliard collard collared collaret galliard goliard milliard pillared poulard holard pollard cellared dullard