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.
smoky smokey smoke smock smoggy smog samek smack smeek samekh sambuke smug
smoky mock moke amok bemock hammock hommock hummock hummocky mammock smock smoke smokey dumky