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.
lunacies launces lances lionises lionizes lenses linseys lionesses lownesses leannesses
lunacies monoecies tenaces fancies fiances hances lances menaces bonacis nancies nances nuances panaceas pinnaces rances seances dances chances