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.
zombi zombie zoom zamia som semi soma some zyme
zombi combo womb duomi coomb nomoi momi homie iambi cambia comb combe bombe coombe bomb cumbia gambia gombo kombu lambie limbi nimbi roomie zombie tomb womby