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.
shairn sharn sharny shorn shoran shrine chirren churn chorine chorion
airn bairn cairn shairn sharn tarn garni sarin reearn murrain mirin kirn giron girn yarn earn brain varna carn darn drain terrain warn grainy iron firn arraign rain barn learn siren saran cairny pirn rainy sharny train brainy deraign karn barny grain baron carny moraine yearn
chair share sharia shariah shear shier shire shirr shri ashier