Social science is any discipline or branch of science that deals with the sociocultural aspects of human behavior.
Economics is concerned with the behavior of the society as a whole and how they react towards changes in the economy. eg, if they say fuel will increase by R2 or $2( Cause i think you r in US), many people will rush to the filling stations to fill up their car tanks. By doing they have shows a reactions towards they rise of fuel.
The social sciences generally include cultural anthropology, ECONOMICS, political science, sociology, criminology, and social psychology.