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.
faecal fecal faucal focal facula feckly fecula focally fugal vocal vagal fickly vakeel faculae feculae fugally vagally vaguely vocally
faecal cecal decal caecal fecal ducal recall zocalo egal scaly caul scale focal cicala jackal coal calo vocal call regal locale squeal legal local laical cicale scall faucal jacal pical recoal tical