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.
nonce nones nance nuance nonuse nowness nonnews nonissue noons nancy nonas nenes neons nines nouns knowns nuncio nannies newness ninnies nans nuns
nonce ponce once faience hones fiance bounce phones menace launce quince bonze nance peones nice fence pounce science since zones dunce tones wince chance bones jaunce hance jones whence sones dance rance seance nones hence pones ounce tenace pinnace wincey pence ones nuance jounce fiancee mince leones lance cones yince