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.
conidia gonidia cnida cnidae conoid canid condo coned conned coined coigned coontie connate caned conto gonad conte candy count canned canoed county ganoid gowned connote cuneate quinoid quoined
conidia gonidia nidi cnida cnidae zenaida