Living organisms including humans are social when they live collectively in interacting populations, whether they are aware of it or not, and whether the interaction is or involuntary.
The word "Social" derives from the Latin word socii ("allies"). It is particularly derived from the Italian Socii states, historical allies of the Roman Republic (although they rebelled against Rome in the Social War of 91-88 BC).
In the absence of agreement about its meaning, the term "social" is used in many different senses and regarded as a [[ concept]], referring among other things to:
Attitudes, orientations, or behaviors which take the interests, intentions, or needs of other people into account (in contrast to anti-social behaviour) has played some role in defining the idea or the principle. For instance terms like social realism, social justice, social constructivism, social psychology, social anarchism and social capital imply that there is some social process involved or considered, a process that is not there in regular, "non-social" realism, justice, constructivism, psychology, anarchism, or capital.
The adjective "social" is also used often in politics, although its meaning in a context depends heavily on who is using it. In left-wing politics left-wing circles it is often used to imply a liberal characteristic, while in right-wing circles it is generally used to imply a conservative characteristic. This adjective is used much more often by those on the political left than by those on the political right. For these reasons, those seeking to avoid association with the left-right political debates often seek to label their work with phrases that do not include the word "social". An example is quasi-empiricism in mathematics which is sometimes labelled social constructivism by those who see it as an unwarranted intrusion of social considerations in mathematical practice.