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.
rouens runs runes wrens ruins roans reins renews ruanas ruinous rennase rins rains ranis rinse ranees rawness wryness
rouens uns ens queens runs eons lenos munis lauans lense genus hygienes guans huns nuns lunas fauns shuns faunas kens weans mensa neons reins fens guns penes menus hymens wheens yens dunes whens weensy paeons dense tuns tunas zeins tense teensy foehns tauons hyenas veins muons pens denes lenes sunns venus scenas sensa hyphens cense peens ruins punas keens peans wrens benes bunas tunes muns lenis puns means nouns peons dens penis peins faenas venues aeons sense liens beans lens jeans lunes mense bens genes miens paeans hens scenes saunas nenes queans tenues deans funs runes leans duns dienes buns teens kenos suns gens quins weens wens bunns whenas sheens veenas hyaenas yeans tens yuans