shadow, shade

shadow, shade  

A shadow is a dark shape made by something that blocks the sun or a light  

 She saw his shadow on the wall.Shadow is an area of darkness made like this  

 The side of the valley was in shadow

Shade is a cool dark area where the sun does not reach, made by the shadow of something such as a tree or wall • Let's eat our lunch in the shade. • He sat under the shade of a tree