Paper is a flat sheet of fibers, usually produced by spreading a wet solution of wood particles on a flat surface and drying through heat and pressure. The fibers can also be cotton or a synthetic, although typically the bulk of the substance is wood fibers. This includes all manner of paper products that may have varying thicknesses, colors or texture. This is distinguished from flat wood products such as plywood and particle board which have a structural function in building construction. Sheathing materials such as the paper affixed to sheetrock however, is paper.
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