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.
nos nows noes nous nose nosy naos knows noise noose noisy nosey nus gnus nisi news nays ness wyns gnaws knees newsy nisei wynns gneiss nausea naysay newsie