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.
modem madam madame medium
modem deem deme demo demy adeem edema idem odeum oedema redeem sodom diadem totem
mode mod made modi moiety mood moody mooed mote motey