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.
crocein croceine crocine coarsen greisen coercion kerosene kerosine grison
crocein ferrocene croceine crocine narcein narceine orcein orcin
croci croze cockers rockeries rockers