card or cardboard

   A stiff paper which may be of any of many thicknesses, typically made of pressed paper pulp or adhered sheets of paper. Special types include bristol board, corrugated cardboard, foam core or foam board, illustration board, matboard, and oaktag. Sometimes cards are made from plastics. Cardboard has many uses. For example, it is employed as a material in making two-dimensional and three-dimensional work, and as a surface on which to mount other work. Card may also refer to a greeting card, postcard, business card, playing card, trading card, credit card, etc. In the fiber arts, to card is to comb out fibers with a wire brush (also called a card).