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.
carn cairn carny cairny careen carina carney carnie karn corn curn carrion carinae crane garni crone crown crony cornu croon corny cornua garron crania cranny curran cornea guarana guarani coreign grin gran kirn kern groan kroon grana green grown groin grain kerne korun krone quern
barn earn carn karn learn reearn darn tarn warn sharn yarn yearn