http://www.penciltechniquefordrawing.com/ - Pencil is first a drawing instrument and then a writing one. You might think that what is the fuss about drawing and writing; the fact is â€“ pens are considered to be writing instruments more than they are considered as sketching ones. The difference lies in the ink. Pens use ink and technically they are more suited to write stuff because they cannot be erased as such. Whereas when using a pencil, they are still today used as drawing instruments and using even for rough work.