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.
pollution palliation plosion pulsion
elution dilution pollution solution volution coalition collation lallation volition delation violation relation illusion illation delusion elation gelation alation elusion valuation vallation solation collusion halation dealation lotion deletion fellation dilation allusion chelation