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.
tunica tunicae tunic tonic tannic tung tanga tanka tonga tanuki
tunica vinic cynic pionic panic manioc muonic quinic kaonic conic maniac hygienic genic tunic tannic tunicae sonic hyenic seneca nick vinca manic snick scenic runic pianic manioca hypnic aeonic finca bionic funkia hyphenic phonic ionic tonic hyaenic xenic yonic
tun tenia teniae tuna tune tunny stun