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.
genus genius gens genes genies genoas genoise gins hygienes jeans jennies jins
venus genus menus nus ens venues faenas hens benes genius onus hygienes bonus vinous beans heinous jeans paeons nous foehns peens gnus kens veenas venous wrens veins aeneous peins eons tonus yeans hyaenas tense whens wheens scenas weensy weans manus sinus genes tenuis conus teensy peons dens dienes anus deans lenos sensa minus nuns bens rouens reins neons pens means mensa scenes aeons cense miens nonuse keens liens peans lenis queens fens lenes lens paeans penis queans gens ennuis aeneus denes lense penes hyphens hymens ruinous leans mense sense kenos nenes dense zeins teens tens tenues tonneaus unaus weens wens whenas sheens hyenas yens
genua genu gen gene genie genii genoa gien agene