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.
reearns reruns rareness
learns reearns yearns earns erns tarns yarns shairns querns terns kernes herons karns serins carns sarans liernes varnas kerns airns sharns darns hyperons ferns cairns reruns herns sarins ernes wyverns barons ternes barns warns bairns