outline ~ the line or set of lines enclosing or indicating the shape of an object in a sketch or a diagram 

penumbra ~ the partially shaded outer region of the shadow cast by an opaque object 

shape ~ the external form, contours, or outline of something or someone 

contour ~ an outline representing or bounding the shape or form of something 

umbra ~ the fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse 

surface ~ the outside part or uppermost layer of something

~artist’s reflection~

surfaces and definitions are captivating. every day the sun rises and sets and casts light through the window. the light interacts with physical pieces and natural phenomena. making shades and shadows.

we have a kindle, an electronic book. to find out a definition, a word is pressed. each word has a definition.