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.
gens genes genus genies genius genoas gins genoise jeans hygienes jennies jins ginzo janes jinns johns joins jones
bens kens sheens wheens weens teens wrens fens hyphens hens gens keens ens lens queens liens hymens miens peens pens rouens dens tens wens whens yens
gen gene genie genii genoa genu genua