Drawing is a broad subject with many opponents to it. There are many different ways to define it but I would say it's making some lines on a surface to make a certain picutre at the end with things other than paint.It can be done with a pencil, marker, pen, or many other things. There's not a right way to make a drawing but there is a few different things most people do.
5 Types of Drawing Untensils
According to vam.ac.uk, "it's the visualization of how poeple think and works it out. It shows people what is being proposed. It describes or records something. It also makes people happy."
Beautiful colours can be bought in the shops on the Riatlo, but good drawing can only be bought from the casket of the artist’s talent with patient study and nights with out sleep. -Tintoretto (1518-1594)