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.
pins pians pains peins pinas pines pions pianos pinnas pens puns pons pans pinnies pawns pones penis punas peens peans poons peons pansy penes panes pensee paeans pennis pannes ponies paeons peones peonies pinnace pawnees pennies hyponeas hyponoias pence ponce
ains joins rains peins lins mains kins kains quins coins gains cains tins dins whins zeins chains sains shins rins jins bins veins ruins reins pins loins pains fins foins quoins gins hins ins wains tains wins zins chins sins yins
pin pina pine piney pinna pinnae pinny piny