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.
geniuses genuses genoises geneses genesis ginzoes joneses
geniuses anuses tennises taeniases rinses onuses minuses nauseas niseis noises nouses anises gneisses finises bonuses venuses ionises genoises genuses conioses lionises nonuses penises sinuses teniases tonuses
genius genies genoise genus agenize