Chunky / Dome: This refers to the thickness and shape. Unlike thin wire hoops, these are thick, often hollow (to remain lightweight), and have a smooth, rounded, dome-like surface.
Huggie Hoop: This is a type of hoop that is very small and sits snugly against the earlobe—it “hugs” the ear.
Closure: They typically use a hinged clasp or clicker closure, where the back post snaps directly into the earring’s body. This makes them secure, comfortable for all-day wear (even sleeping), and you don’t need a separate earring back.
Finish: As seen in your photo, they are most commonly sold in gold-tone and silver-tone.