The question is too vague . . .The question is: which shapes have circular cross-sections?
My child has said: cone, sphere and a cylinder.
A sphere has a circular cross-section no matter at what angle the plane cuts the sphere.
A cone has a circular cross-section if the plane is perpendicular to its axis.
The same is true for a cylinder . . . or an hourglass . . . or a cable.
Take a king-size bedsheet and push it halfway through a napkin ring.
We have a "shape" that has one circular cross-section.
Does that count?