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.
filiation foliation fellation violation volition vallation valuation falchion volution
filiation foliation palliation ciliation elation dilation fellation dealation vallation violation relation alation coalition valuation gelation collation lallation halation solation volition delation illation chelation