The document discusses the concept of social structure. It defines social structure as the organized set of social institutions and patterns of relationships that compose society. Social structure determines and is determined by social interaction. The key elements of social structure discussed include values, groups/institutions, organizations, collectivities, roles, and norms. Talcott Parsons identified four main types of social structure based on the values of universalism/particularism and achievement/ascription: universalistic-achievement, universalistic-ascriptive, particularistic-achievement, and particularistic-ascriptive.