What is the difference between drawing instrument and material?

Drawing instruments are tools used to create drawings, such as pencils, pens, rulers, compasses, and erasers. In contrast, drawing materials refer to the surfaces and substances on which drawings are made, such as paper, canvas, charcoal, ink, or colored pencils. Essentially, instruments are the implements used to apply marks, while materials provide the medium that receives those marks. Both are essential for the drawing process but serve different functions.