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.
genesis geneses genuses geniuses genoises ginzoes joneses jaunces jounces
genesis kinesis synesis gnosis kneesies noesis enosis geneses joneses kenosis kineses hypnosis sanseis senseis zoonosis
genes gens genies genus agenes