Answer:
In geometry, a torus (plural tori, colloquially donut) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis that is coplanar with the circle.
Doughnuts are a kind of ring-shaped snack food popular in many countries, which are usually deep fried from flour doughs. After being fried, doughnuts can be spread with chocolate or icing on top, covered with powdered sugar or fruit, or glazed with sugar icing.
So it's mostly food it is in geometry we consider it a shape