They have compound names which use Greek prefices for the number of faces, and the suffix "hedron".
So, an octahedron would be a solid with 8 faces.
Dodecahedron.
A Rectangle
That one.
Rectangular Prism
A cube
polyhedra
A Rectangle
Dodecahedron.
Rectangular Prism
That one.
Any sort of prism.
A cube
A polyhedron is a solid figure with many plane faces, typically more than six.
Since a cube has 6 faces, you would be looking for a solid shape with only 2 faces and no such solid exists.
Any polyhedron a prefix that stands for a number greater than 6.
A solid figure that has some of the same faces but some different faces, and has one more face than the other, is a prism and a pyramid. A prism has two identical bases and rectangular or square faces, while a pyramid has a polygonal base and triangular faces that meet at a single point, called the apex. The prism has one more face than the pyramid.
A tetrahedron has four faces and six edges.