graded markings that indicate light or shaded areas in a drawing or painting
"The artist spent hours refining the shading on the portrait to give the subject's face more depth and dimension."
The act or result of something being shaded.
"The shading from the oak tree made the garden bench a perfect spot for reading on a hot afternoon."
present participle of shade
"The artist carefully applied shading to the character's face to give it depth and dimension."