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.
scorn screen scrawny squireen
acorn corn bicorn scorn carn cornu corny curn korun bicorne bicron aequorin macron micron dacron
score scoriae scoria scree sucre scurry scry screwy screw scary scour scarry scarey scare scar sacra escrow