A prism is a solid object with identical ends (bases), flat sides and the same cross section all along its length. A prism is named by the shape of its base. Hence, a rectangular prism will have a rectangular base.
A face is a flat surface of a solid figure. An edge is the place where two faces meet and a vertex (vertices) is a point where two or more edges meet. A rectangular prism has $6$ faces, $12$ edges and $8$ vertices.