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.
shorl choral shrill chorale choreal chorial sheerly shrilly chorally churl chiral charily charley charlie cheerly cheerily
whorl shorl choral gooral churl moral zoril herl horal hurl coral goral whirl boral loral morel oral orle poorly ceorl sorel harl
shore chore chorea share sharia shariah sherry shire shirr shoer shrew shri ashore