The emphasis of social system is on the interdependence of social phenomenon. Single social fact and phenomenon within a system is studied as whole. Social system functions when its elements are functional. Without its elements, social system cannot function. All the elements of the social system work as a unit. Family is a social system; members of family are dependent on one another. They interact with each other often. Its members cannot function and survive alone, they can function together as a unit. Social system articulates the relationship bond amongst its members. The stability of the social system depends on the relationships of its members within. If the relationship is significant, it means the social system is stable, though if the relationship is insignificant than the social system is unstable.
Concrete social systems are formed by cooperation. Like football team, family, college, mosque, church, youth club, teachers association, labor association etc. members of such social systems cooperate, collude and participate for the prime purpose of attaining objectives. For example, teachers, students, principle board members and administration work together to make a system of college. A system is operated through a set of norms. These set of norms dictate the relationships and duties of the members of social system.
The members of social system interact with one another more frequently compare to the people outside the group. Social system creates a bond and sense of unity among the members. The sense of unity make them function as a unit.
