2. An identifiable path of a point moving in space. It can vary in width, direction, and length.

3. Contour Line A contour is the line which defines a form or edge - an outline.

6. Line Weight Line weight is a term that describes the relative 'weight' - strength, heaviness, or darkness - of the line against the background or support.

10. Continuous Line A continuous line drawing is a type of drawing that includes continuous contact with the surface of a picture plane that makes enclosed forms and shapes.