line
A mark made by a moving point: straight, curved, zigzag, thick, thin and more.
contour line
A line that follows the outside edges (and sometimes the inside edges) of an object, like tracing its shape with your eyes.
line weight
How thick or thin, dark or light a line is. A heavy line is thick and dark; a light line is thin and pale.
visual rhythm
A beat you can see, made by repeating lines, shapes or colours, like a pattern that makes your eyes move along.
expressive
Showing a feeling or mood.
blind contour drawing
Drawing an object's contour while looking only at the object, not at your paper.