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A sphere has no faces an corners. The term "faces" and "corners" are applied to polyhedrons, figures with flat surfaces.
A sphere has no edges, because an edge is defined as where two faces meet. Likewise, it has no faces, because a face is defined as the flat surface of an object. Likewise, it has no corners either.
No corners, two faces
A parallelogram is a 2-dimensional object and so has only one face.
It depends on how many cubes in the stack and what shape they form.