supports
Surfaces on which paintings, drawings and engravings are created.
paper 
Vegetable substance reduced to paste, rolled and then dried into thin sheets that serve as a surface for a drawing, painting or engraving.
cardboard 
Somewhat rigid sheet made of several layers of paper pulp; its function is to support a drawing or painting.
canvas 
Piece of fabric covered with a primer and set on a stretcher; it serves as the surface for the painting.
panel 
Wooden board that serves as a rigid support for a painting.