There are many, but the infinitely many types of prisms are probably the simplest.
It is a polyhedron with two congruent faces: nothing more, nothing less. That can change if several additional conditions are required of the polyhedron.
Any regular polygon has two congruent faces. Many polygons have two or more congruent faces.
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.
A polyhedron that has 2 congruent faces is a PRISM. To be a prism, all the other sides (not including the 2 that are congruent) have to be 4-sided.
A Prismthe faces are called bases
There is not a term for a polyhedron with 2 congruent faces. There are multiple polyhedra with 2 congruent faces.
A right prism is a polyhedron that has 2 congruent faces which are sometimes called bases.
Parallelogram prism
A polyhedron with 12 congruent faces is a dodecahedron.
A cylinder would fit the given description
There are infinitely many such polyhedra. A regular dodecahedron, for example.
It's a cube.