Oftentimes, ink is used in combination with pen. Pastel - This is simply chalk that has been tinted artificially. Chalk occurs naturally in white, black or red color. It has been used for drawing throughout all human history. Stone Age cave drawings were executed in chalk.
Pastel drawings are much more fragile than pen or pencil drawings.
They require extra care when transporting. If hung on a wall it is strongly recommended that they be protected from outside influences. Pencil - It consists of a rod of marking substance, such as graphite, enclosed in a wood casting. Pencil, as we know it today, was born in the end of 18th century. Allowing for exact, linear strokes it quickly became very popular.