cylinder
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None, really. Except that when a solid has faces of two kinds and there are only one or two faces of a particular shape then the solid is conventionally viewed with that face at the bottom (and top) and the bottom face is called the base. Common examples are pyramids or prisms which may have bases that are triangular, quadrilateral, pentagon etc. Or cones and cylynders whose bases may be circles or ellipses.
The two circles at the top and bottom of the cylinder are parallel faces.
A cylinder because there are two circular bases on the bottom and top and in the middle is a curved surface. hope I helped
A cuboid is a 3D shape that can be a cube or a rectangle, both having 2 ends, 2 sides, and a top and a bottom face.
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