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.
genettes genets gentes gents gentoos jennets giantess giants jaunts joints juntas juntos
genettes lunettes dinettes tonettes netts gentes kentes nineties rentes yentes
genet genette gent gentoo agent