"shading" in the noun sense
graded markings that indicate light or shaded areas in a drawing or painting
2. shading, blending
a gradation involving small or imperceptible differences between grades
"shading" in the verb sense
1. shadow, shade, shade off
cast a shadow over
2. shade, fill in
represent the effect of shade or shadow on
protect from light, heat, or view
"Shade your eyes when you step out into the bright sunlight"
"shade the meaning"
pass from one quality such as color to another by a slight degree
"the butterfly wings shade to yellow"
Source: WordNet® (An amazing lexical database of English)
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