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.
gyrus gyros gyres gyrase gyrose gears giros gerahs giaours jars
gyrus eyres lyres pareus ruse aureus gurus byres eyras aurous serous xerus hydrous cirrous torus cerous truss pyros tyros praus chirus peruse rues varus sorus kurus nairus cruse crus grues gyres virus gyros cirrus druse ferrous ceruse torous cereus trues pyres tyres porous urus parous chorus