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.
kinins quinins quinines quininas conins conines canines guanins quinones guanines canniness canons cannons guenons canoness canonise conenose coniines goneness
venins quinins guanins renins linins kinins rennins tannins conins nuns pennines pinions nannies nines phonons ninons quinines linens xenons fanions minions honans anions canonise pennons tenons dyneins unions ronions cannons nans mannans pinons inions canines coniines bunions ninnies munnions onions fanons guanines quininas conines guenons canons reunions banians unionise venines wanions