Social construct
A social construct is any category or thing that is made real by convention or collective agreement. Socially constructed realities are contrasted with natural kinds, which exist independently of human behavior or beliefs.
Simple examples of social constructs are the meaning of words, the value of paper money, and the rules of economic systems. Other examples, such as race, were formerly considered controversial but are now accepted by the consensus of scientists to be socially constructed rather than naturally determined. Still other possible examples, such as less empirical and more abstract concepts which underlie particular scientific theories, remain the subject of ongoing philosophical debate.