Drawing is a way of making a picture. Drawings are created by making lines on a surface. Long lines make up the shapes and small lines make the textures. Drawings can be images of real-life or abstract images.
Drawing paper is a special material sometimes used for drawing, however many just use paper. Pencils or pens are most commonly used for drawing. However, chalk, charcoal, and many others writing utensils are used.
Shading is the darkening or coloring of a drawing with lines or blocks of color. It can be used to make your drawings more three dimensional. Shading is the process of adding value to create an illusion of form, most importantly the light in a drawing. It should have a highlight (where the light is shining), mid tone (goes darker in color), Core shadow which is the darkest color on your drawing, then there is the reflected light. Reflecting light is where light shines on the object you are trying to draw
Hatching is a artistic technique used to create tonal or shading effects by drawing closely spaced parallel lines. There are different types of hatching. There is Parallel hatching, contour, crosshatching, tick hatching, and more. There are many different ways you can do this.
Drawing has been done for thousands of years, dating back to cave paintings. It focuses on objects made by humans for any number of spiritual, narrative, philosophical, symbolic, conceptual, documentary, decorative, and even functional and other purposes.