3D shapes have faces (sides), edges and vertices (corners). Faces - A face is a flat or curved surface on a 3D shape. For example a cube has six faces, a cylinder has three and a sphere has just one.

For example a cube has 12 edges. Vertices - A vertex is a corner where edges meet. The plural is vertices. For example, this cuboid above 6 faces, 12 edges and 8 vertices.