Difference between abstract and surreal art

Surrealism- actual things drawn pretty realistically, but they don't make sense together or that scene wouldn't happen in real life. Even if the object depicted doesn't make sense, it's still clearly depicted. 
Abstract- even though it conveys emotions or sometimes resembles things, abstract usually doesn't depict a scene and is sometimes shapes and colors, that when combined, makes you feel a certain way.

The answer is

What it's saying is that colored pieces of canvases is a piece of art