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.
senores senors snores senoras seniors snares sceneries seiners senarius sonorous scenarios sneers sonars sinners sooners sunrays cinereous
senores snores tenours donors senors honorees snares honours seniors minors noris enures venires henries noirs senoras nares inures genres juniors canoers coenures manors manures pawnors honors tenors tenures
senor senora senarii senary senior snore