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.
gueridon guerdon guardian cardon cordon gradin gratin grutten curtain cardoon keratin carton cortin craton cretin croton garden
gueridon radon redon bourdon bridoon fordone harridan cardon cardoon cordon guerdon lardon lardoon pardon teardown triton