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.
muons muns mons moans munis monos moons monas moneys monies mans minas minus manos mains means mines mensa mense manus menus manes manas mynas hymns minis miens manse mynahs mensae hymens manias mannas meanies meinies menisci minnies minnows monoecy mannose meanness
tauons muons uns ons coons cones lunas hones johns owns peones loans huns fons loons sones funs tunas cons bonus munis monas tons conns phones lunes quoins eons pons gowns nones pions yonis zoons wons phonos tuns tenuous punas duns scions downs dons fauns jones suns leones toons sonsy faunas nouns hysons fohns ruins runs neons roans bunas mons bunns pones goons aeons lauans kaons onos hons moons noons quins cions peons phons bones lions boons monos sinuous coins guans dunes joins nuns onus foins ones muns conus runes rouens nonas paeons knowns poons buns koans ions tunes puns loins donas donsy saunas guns tones sons tonus towns sunns moans zones shuns yuans
muon mun mon maun moan money monie mono mony moon moony mown muni