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.
bunions banians boniness bonniness bananas bonanza
bunions munnions onions fanions ronions minions unions wanions pinions inions reunions anions rennins ionones guanines quininas linins nones banians pinons knowns annonas quinones neons canons nines nouns guenons tenons dyneins conines venines fanons renowns pennines quinines pinones ninons canines cannons noons kinins renins quinins pennons guanins conins phonons venins tannins xenons nonas chinones