This document discusses the difference between the terms "cyber" and "cyber security". While many use "cyber" as a synonym for cyber security, the document argues it is more accurate to think of "cyber" as referring to cyberspace. Cyberspace refers to the man-made domain created by connecting computers, networks, and other digital infrastructure. The document provides an excerpt from the Army Cyber Command that outlines how they view cyberspace and includes operations like offensive and defensive cyberspace operations. It includes a graphic created by the author to show the interrelationship of cyberspace components, with cyber security as a supporting function rather than core to cyberspace.