Can you name the two different canvas materials that artists use to paint on?
And the answer is:
Cotton and Linen.
Did you know that? I know that this is common knowledge among artists, but have wondered before whether your average person knows this!
Cotton canvases are made from, duh, cotton, and linen canvases are made from the flax plant. While the quality of the canvas can vary widely between manufacturers, both are suitable surfaces to paint on.
For a majority of my paintings, I paint on high quality cotton canvases. For portrait paintings, I prefer to use linen, since I can get a very smooth linen surface to make sure facial details are accurate.