Silhouette
A silhouette is a view of an object or scene consisting of the outline and a featureless interior, with the silhouetted object usually being black. The term was initially applied in the 18th century to portraits or other pictorial representations cut from thin black card.

Silhouette Photography
Many photographers use the technique of photographing people, objects or landscape elements against the light, to achieve an image in silhouette. The light might be natural, such as a sunset or an open doorway, a technique known as contre-jour or it might be contrived in a studio.
(wikipedia)

The key to a great silhouette photography is the objects should have a strong shape

Some of silhouette photos by great various artist









and some of mine


enjoy