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.
nonnews nones nowness nannies ninnies nonas noons nonce nouns neons nines knowns nonuse newness nans nuns nonissue naans nanas nance nenes nuance
nonnews news hinnies jennies joannes johnnies gunnies keenness vainness minnies leanness pennies renews sonnies dunness tonnes wanness winnows shinneys funnies newsy nannies fannies bonnes bennies bennes meanness minnows nines bunnies nones ninnies pannes pinnies sinews donnees tennies tunnies whinnies shannies shinnies