background
back.ground \-.grau.nd\ n 1a: the scenery or ground behind something seen
or represented 1b: the part of a painting representing what lies behind
objects in the foreground 2: an inconspicuous position 3a: the natural
conditions that form the setting within which something is experienced
3b1: the circumstances or events antecedent to a phenomenon or development
3b2: information essential to understanding of a problem or situation 3c:
the total of a person's experience, knowledge, and education 4: intrusive
sound that interferes with received electronic signals