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.
fruition variation version foreshown
fruition ration aeration variation gyration creation laureation narration oration portion seriation serration deaeration derision duration hydration