Line is a mark made by a pointed tool - brush, pencil, stick, pen, etc. - and is often defined as a moving dot.
Shape is an area that is contained within an implied line, or is seen and identified because of color or value changes. Shapes have two dimensions, length and width, and can be geometric or free-form.
Form describes volume and mass, or the three-dimensional aspects of objects that take up space. Forms can and should be viewed from many angles.
Color depends on light because it is made of light. There must be light for us to see color. Hue refers to the names of the colors. Primary hues are yellow, red, and blue. Secondary colors are orange, violet, and green. Intermediate colors are yellow-orange, red-orange, red-violet, blue-violet, blue-green, and yellow-green.
Value refers to dark and light. Value contrasts help us to see and understand a two-dimensional work of art.
Texture refers to the surface quality, both simulated and actual, of artwork.
Actual space is a three-dimensional volume that can be empty or filled with objects. it has width, height, and depth.