(Bonus) Social privilege is a theory of special advantage or entitlement, used to one's own benefit and/or to the detriment of others. Privileged groups can be advantaged based on social class, caste, age, height, nationality, disability, ethnic or racial category, gender, gender identity, neurology, sexual orientation, physical attractiveness, and religion. It is generally considered to be a theoretical concept used in a variety of subjects and often linked to social inequality. Privilege is also linked to social and cultural forms of power. It began as an academic concept, but has since been invoked more widely, outside of academia. This subject is based on the interactions of different forms of privilege within certain situations. Furthermore, it must be understood as the inverse of social inequality, in that it focuses on how power structures in society aid societally privileged people, as opposed to how those structures oppress others.