Graphite
A gray, crystalline, allotropic form of carbon that occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors.
Ink
A colored fluid used for writing, drawing, printing, or duplicating.
Watercolor
artists' paint made with a water-soluble binder such as gum arabic, and thinned with water rather than oil, giving a transparent color.
Collage
a piece of art made by sticking various different materials such as photographs and pieces of paper or fabric onto a backing.
Photographs
a piece of art made by sticking various different materials such as photographs and pieces of paper or fabric onto a backing.