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.
pannes panes pans pinnies pawnees pennies peans pansy pians pones penes pains pines pawns pinnas peones ponies paeans pennis pianos paeons panacea peonies pinnace pens puns pins pons hyponeas ponce pence peins peons peens pions pinas poons punas penis pensee pounce
bennes bonnes pannes joannes tonnes denes funnies fannies canoes venues feyness penes zanies sanes donees leones pennis annas hinnies tines noes aeneus gayness ponies gunnies renews canes tawnies beanies leanness banes benes keenness conns seines gooeyness pones tineas phoneys jinns peonies looneys honeys hygienes bines nans vainness hones runes manes weenies pinnas lunes townees sonnies wryness sawneys donnees tunes whinnies dunness wines hyponeas woeness chines sheeneys shines bennies shinnies minnies wanes siennas sennas bunnies lines lioness tennies dienes wynns tenues goonies sinews tynes newness ranees tawneys sunns koines lianes nonnews meanies nenes bones peones monies heinies vines jinnis banns conies mines coyness anes inns kines moneys pawnees johnnies news jones zines cannas genes dynes janes pennies nines knees gooneys lunies linns goannas ones sones meanness guineas vanes bunns lenes hennas lanes donnas fewness bennis coneys ninnies duennas jennies loonies nuns pinnies fines panes nones mannas denies cones genies phones tennis dueness sunnas kanes ness sanies phonies dunes meinies pines nowness lowness wanness waeness zones toonies townies sines rawness tunnies cines fanes nannies whines tones wienies boonies winoes chaines shannies scenes sheenies dines shinneys shyness
panne pan punny pinnae pain pane pawn pawnee pean penna pennae penne penni pennia penny pian piano pinna pinny span