Prism!
Its "bases"
A cylinder has two parallel congruent faces and a curved surface.
They are prisms. The bases may be any polygons with three or more sides.
Platonic
An upright pentagonal prism has two congruent parallel bases and 15 edges.
cylinder
A cylinder
A prism has two congruent parallel bases.
Prism!
A prism.
A cylinder would fit such a description of it.
parallelogram, because if the two bases are congruent and parallel then the sides will also have to be parallel, so it is a parallelogram
Most things do not have two congruent parallel bases. I do not, by desk does not, my lap top does not, etc etc.
Sounds like a rectangular solid to me, such as an elongated box.
It is a prism. More specifically, "A solid figure that has two bases that are parallel, congruent polygons and with all other faces that are parallelograms." This describes the general prism. Replace "polygons" with "triangles" and you have specified a triangular prism.
A square.