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.
conus cons cones coins conns coons coneys conies cans coyness gowns kaons goons canes cains koans cannas canoes koines quoins goannas gooneys goonies guns kens kins gooeyness
conus onus bonus tonus nus ons leones goons knowns nouns venus aeons ions kaons noons nonas pones foins vinous ruinous gnus venues menus loons joins onos monos owns conns bones hysons wons towns phones tones tenuis tauons donsy donas zones sons sinus scions fohns aeneus peons poons genus nones paeons coins manus ennuis muons coons hons gowns cones boons peones phonos lions minus monas fons mons koans anus genius nous neons venous loins heinous tenuous tons johns aeneous phons quoins moons pions cons jones hones moans pons nuns cions eons sinuous nonuse sones ones sonsy roans zoons dons loans downs tenues sanious toons unaus yonis
con coin cone coney coni conn cony coon icon coquina scone