Typically, matboard will have a window cut with beveled edges and be placed in front of the artwork. For this reason, matboard comes in many surface colors and often has a specifically colored core—white, cream, black, or solid in the same color as the front. Mounting board is generally placed behind the matboard. Surface colors and core colors will be more limited. However, window mats can be cut out of mounting board. We recommend using museum-grade, solid-core boards for this purpose.
"Foam board" and "foam core" are different terms for the same product.