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