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.
pennons pennines pinons pinions pinones penance pinenes
cannons pennons bunions fanions fanons phonons inions ionones canons annonas anions pinones rennins reunions xenons tenons wanions quinones knowns minions onions nones nonas neons guenons mannans munnions noons nouns ninons pinions pinons renowns ronions tannins unions chinones