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.
mogul macula macule miggle muckle maculae maquila muckily muggily
mogul gul gull bogle jugula coagula googly googol ligula ligule ogle reguli seagull
mog maguey moggie moggy smog smoggy