Painting is the practice of applying paint, pigment, color or other medium to a surface (support base). The medium is commonly applied to the base with a brush but other implements, such as knives, sponges, and airbrushes, can be used.
In art, the term painting describes both the act and the result of the action. Paintings may have for their support such surfaces as walls, paper, canvas, wood, glass, silk, lacquer, clay, leaf, copper or concrete, and may incorporate multiple other materials including sand, clay, paper, gold leaf as well as objects.
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Excerpt sourced Wikipedia 29 March, 2015