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.
nows knows nos nose nous noes nosy news naos nosey noose noise noisy gnaws newsy newsie nus gnus nays ness nisi wyns knees nisei wynns
bows mows shows wows dows rows powwows pows nows knows miaows bowwows meows lows cows jows hows vows sows tows chows yows os