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.
volition volution violation foliation filiation vallation valuation fellation falchion
volition coalition dilution deletion dealation solation relation palliation collision foliation gelation illation halation volution violation valuation lotion vallation filiation fellation elution elision elation alation collation lallation pollution ciliation solution delation dilation chelation