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.
sense sensei sensa cense sansei scenas sonsie scenes seines sennas seance science sons senecio siennas sans suns sins sones sains sines zeins sunns sonsy sinus sanes sinhs snows snaws sanies xenias scions sunnas sinews hysons sneeze sneezy saunas sanious sawneys sinuous sonnies sunnahs zins
lense tense sense cense mense dense ens ensue jeans pensee ansae liens guanase hyphens bens hygienes faience peens ionise scenes mannose denes miens nose sensei mensae benes kenos sensa rouens rinse peans donsie yeans hyaenas whens whenas wens weens unsew pence gens teensy venus genus zeins wrens veins lenis reins lionise sansei lens means kinase kens venose mensa aeons hens menus hence linsey anise queens eons fens scenas peons fence penes rennase lanose lenes paeans faenas peins nonuse keens manse teens penis foehns veenas nenes queans leans lenos beans pens finesse science dienes tens neons genes hanse sonsie paeons deans dens hymens unease weans weensy wheens whence sheens hyenas yens
sen scena scene seen seine sene senna sewn sienna season seisin session