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.
contessa countess contes counties connotes coonties counts contos contuse condoes conatus canities cants cunts cantus kentes condos cantos candies conduce conoids gunites quintes gahnites kainites keynotes canids gonads qanats quants quints
contessa giantess countess mantissa
conte coined coned conned conto coontie count county