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.
lionises lionizes lionesses linseys lenses lownesses lances leannesses launces lunacies
anises lionises ionises finises penises tennises conioses manses lionizes lenses ensues incise linseys kineses geniuses hanses hypnoses teniases venuses joneses bonuses genoises rennases censes sinuses deionizes tansies kinases tonuses gnoses tenses anuses niseis nancies onuses ionizes menses mannoses noses guanases geneses nonuses fancies genuses minuses gneisses quinsies nisus noises pensees rinses senses zoonoses taeniases pansies concise unsews
lionise lionize lioness lions loonies blinis