In radiology, there is a concept called the silhouette sign. It refers to the loss of normal borders between structures and helps us radiologists localize an abnormality seen on x-ray. In photography, silhouettes create a negative space within this space.
Bleeding into the Night 
Impeachment 
Inside Out 
Untitled 
Cross Pollinate 
A Calming Effect 
Sit and Reach 
Castillhouette 
Chillin’