Drawing

Drawing is one of the oldest forms of human expression within the visual arts. It is generally concerned with the marking of lines and areas of tone onto paper/other material, where the accurate representation of the visual world is expressed upon a plane surface

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Drawing is often exploratory, with considerable emphasis on observation, problem-solving and composition. Drawing is also regularly used in preparation for a painting, further obfuscating their distinction. Drawings created for these purposes are called studies.

 

There are several categories of drawing, including figure drawing, cartooning and freehand. There are also many drawing methods, such as line drawing, stippling, shading, the surrealist method of entopic graphomania in which dots are made at the sites of impurities in a blank sheet of paper, and lines are then made between the dots), and tracing (drawing on a translucent paper, such as tracing paper, around the outline of preexisting shapes that show through the paper.


A quick, unrefined drawing may be called a sketch.

Source:  https://en.wikipedia.org/wiki/Drawing