A polyhedron that has two congruent faces is called a prism. It means that when it is cut at the cross-section, the shape is the same as its base.
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It is a polyhedron with two congruent faces: nothing more, nothing less. That can change if several additional conditions are required of the polyhedron.
A cylinder would fit the given description
A prism has two congruent parallel bases.
A triangular prism is a polyhedron comprising two congruent and parallel triangles, attached to one another by three rectangular faces.
That would be classified as an edge.