Drawing is the process of creating a two-dimensional visual artwork by applying pigment on a flat surface such as paper. The pigment can be dry (e.g. pencils, chalk, charcoal, crayons) or liquid (e.g. ink). The resulting work is also known as a drawing.
In contrast to painting, the pigment is not individually mixed before it is used. So when an artist uses a brush and ink on paper, it is drawing, but when he or she uses a brush and watercolor on paper, it is painting.
Drawing can be from real life scenes and models, or from imagination. Drawing is often said to be the mother of all visual arts, from painting to architecture and sculpture. Drawing is also the basic technique needed to create animation.
While an artist who paints is known as a painter, an artist who draws is seldom called a drawer because of the homonymous meaning of the word. Instead, artists who create drawings are sometimes called illustrators, draftsmen, or graphic artists.
Time lapse speed painting in Photoshop.
When color is used in computer graphics, it is debatable whether the technique should be called "drawing" or "painting".