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.
panino panini pinon pennon pinion pennine pinene
panino venin quinine guanine quinin conine conin gonion canine inion pinon cannon pennon rennin anion ronion onion tannin munnion wanion linin venine fanion bunion minion leonine kinin quinina banian benign guanin aeonian eonian nine renin pinion reunion pennine dynein panini union ninon hyenine
pan pain pane panne pawn pawnee pean pian piano span