"Social" is an adjective derived from the noun "society" - "society". In modern Russian, there are many terms that are somehow related to the word "social": social position, social responsibility, social security, social psychology … This list can be continued. Most of its elements have firmly entered the daily life of a modern person, but it is impossible to understand what they mean if you do not know the meaning of the very concept of "social".
Main value
As mentioned earlier, "social" comes from "socium", which literally means "society". Therefore, social is the same as public. This is how you can characterize everything that is somehow connected with life surrounded by people, in human society.
This explains why the term is now so widely used. Man is a social being. Modern life involves his constant presence in the environment of other similar people, communication and interaction with them - social contact. Every personin this society there is a place of its own, determined by its merits and achievements - social position. In addition, a person surrounds himself with a circle of people close to him in convictions and character - friends, family, colleagues. This is how social relationships are formed.
Other usages
There is a so-called social psychology - a science that studies the behavior of people, their communication and interaction with each other.
A welfare state is a state whose policy is by and large aimed at eliminating inequalities in society and improving the living conditions of citizens.
Social order is some kind of need or requirement, but not of one person, but of a group of people, society or social stratum.
On social networks, you can find many results for the term "social experiment". This kind of research is aimed at improving understanding of the psychology of people, the nature of their actions, the reasons for their behavior.
Alternate value
Social is not only pertaining to social life. Sometimes this term characterizes something that radically changes this life, makes significant amendments to it, and sharp and radical ones at that.
Social can be a coup or a revolution. The meaning of the word "social" in this case is one who has changed social life. The most striking examples of such changes are the English Revolution in the seventeenth century and the French Revolution in the eighteenth.