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.
katchinas kachinas kations kitchens cations cochins kuchens cautions cushions cushiness gaucheness coitions gushiness
chinas kachinas katchinas chins chains chines chinos echinus cochins machines zechins