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.
cochin coition cushion kachina cushiony katchina cation kuchen caution kitchen
chin cochin zechin reshine tuchun lichen shiny kitchen kachina cushion fashion echini bitchen beechen shine chino shin chine china chain katchina kuchen lochan pechan richen chon machine techno shoeshine
cache cachou coach cooch cosh couch cockish cockshy