Best example I can give: let's say I want to make Saturn (the planet with the rings), a very simple and basic one.
Can I use the sphere to make the planet, and a circle to be the ring? The circle would be "cutting the sphere in half". Also, for the textures, can it be the blurry visuals of planets and the concentrinc rings for the ring?
All in all, there are still only two shapes (sphere and circle), though the camera might make the circle look oval sometimes...