👉 The term "circumconic" refers to a type of conic section, which is an ellipse or a parabola that passes through its center and is tangent to one of its axes. These types of conics are important in geometry and have applications in various fields such as astronomy, physics, engineering, and mathematics. Circumnetsurfaces: The term "circular" refers to the shape formed by the intersection of a plane with the surface of an ellipse or par