Wallpaper is a type of decorative material used to cover and decorate the interior walls of homes, offices, and other buildings. It is usually sold in rolls and is applied onto walls using wallpaper paste. The most common types of wallpaper are PAPER, woodchip, FLOCK, and anaglypta. PAPER wallpaper is made from thin sheets of PAPER that are printed with a design or pattern. Woodchip wallpaper is made from small pieces of wood that are glued together and then printed with a design or pattern. FLOCK wallpaper is made from small pieces of velvet-like material that are glued together and then printed with a design or pattern. Anaglypta wallpaper is made from embossed PAPER that is printed with a design or pattern.