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.
pinas pinnas pins pines pains punas pians pions peins pianos pens pinnace puns pons pans pinnies hyponeas peans pones peens penes poons pansy penis peons pawns panes hyponoias peones pennis pensee paeans paeons pannes ponies panacea pawnees pennies peonies
vinas pinas chinas kinas minas ins duennas bunas hins kins hennas nines monas kains bines cains cannas fins naos chains sains nays hyponoias veins loins lanais kanas faenas nans ains pinnas mynahs mannas manas pains rennase sinus jinns rains inns scenas vinos wins donas wains unais whines zins dinos reins sunnahs xenias chines chins shins tineas hyenas tins wines seines sinhs manias vines siennas miens joins bins cines tains kinase pins jins quins liens goannas rins annas guanase mains pians nanas cions kines ruins mynas tenias finis rinse lines hyponeas nonas zines quoins gins ions coins peins finos linos lianas guanays pines minis quinsy linns lins quinoas gnaws lions fines veenas sines anoas foins mines dins koines minus saunas lunas punas ruanas snaws winos pions gains kinos guineas anas scions sennas faunas whenas zinnias tunas tines taenias whins sins donnas dines genoas zeins sunnas chaines chinos shines hyaenas unaus yins
pina pin spinny spine opine pain pein pian piano pine piney pinnae pinna pinny piny pion puna apian epinaoi spin spinney spiny