# Sociometric space, e.g., the rating on a scale of leadership ability of each member of a group by every other member. - James Grier Miller

More concrete, physical space is the extension surrounding a point. It may be thought of as either the compass of the entire universe or some region of such a universe.

# Pecking order in birds or other animals.

The structure of a system is the arrangement of its subsystems and components in three-dimensional space at a given moment of time. This always changes over time. It may remain relatively fixed for a long period or it may change from moment to moment, depending upon the characteristics of the process in the system. This process halted at any given moment, as when motion is frozen by a high-speed photograph, reveals the three-dimensional spatial arrangement of the system's components as of that instant.