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.
sheroots cheroots cherts sherds shirts shorts shrouds chariots charts shards shreds shairds choroids shorties shrewdies
roots cheroots sheroots rots trouts rotos broods pierrots parodos grots riots roods rotas rotes rotis heriots tarots carrots garotes garrotes griots groats grouts parrots droits trots chariots routs
sheroot cheroot sheared sheered sherd shroud schrod ushered usherette