A unique work of art, often on paper, made with dry or wet mediums including pencil, charcoal, chalk, pastel, crayon, pen, ink, watercolor, or oils. In addition to paper, drawings may be made on other organic or synthetic supports, including parchment, vellum, or acetate. Drawings that are site-specific can be executed directly on a wall, floor, or other surface. Drawings are made as both independent finished artworks and as studies or plans for works in other mediums.