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.
tannic tonic tunic tanuki tunica tunicae tang tank tanga tango tanka
tannic nick hyenic tunica tonic xenic snick cynic pionic panic muonic aeonic fennec hyphenic phonic vinic bionic hygienic pianic hyaenic tunic ionic sonic scenic runic hypnic genic manioc manic maniac quinic kaonic conic yonic
tannoy tan taenia taeniae tain tawney tawny tinny tonne tonneau tunny stane