Painting is a visual art, which is characterized by the practice of
applying paint, pigment, color or other medium to a solid surface
(called the "matrix" or "support"). The medium is commonly applied to
the base with a brush, but other implements, such as knives, sponges,
and airbrushes, may be used. One who produces paintings is called a
painter. In art, the term "painting" describes both the act and the
result of the action (the final work is called "a painting"). The
support for paintings includes such surfaces as walls, paper, canvas,
wood, glass, lacquer, pottery, leaf, copper and concrete, and the
painting may incorporate multiple other materials, including sand, clay,
paper, plaster, gold leaf, and even whole objects.
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