Capitalism -  is a social system based on the principle of individual rights

Communism - a theory or system of social organization based on the holding of all property in common, actual ownership being ascribed to the community as a whole or to the state. ( classless)

Free market - an economic system in which prices and wages are determined by unrestricted competition between businesses, without government regulation or fear of monopolies.

Free enterprise - an economic and political doctrine holding that a capitalist economy can regulate itself in a freely competitive market through the relationship of supply and demand with a minimum of governmental intervention and regulation.