Reification, dialectic, and alienation are all key concepts in the Frankfurt School's theory of critical theory.

Max Horkheimer is considered to be the founder of the Frankfurt School.

Critical theory aims to understand and critique the social and economic conditions that shape human life, develop a revolutionary political program, and promote social justice and equality.

Dialectic of Enlightenment, Minima Moralia, Eros and Civilization, and One-Dimensional Man are all key works of the Frankfurt School.

Reification is the process by which objects become commodities, humans become alienated from their own labor, and humans become alienated from nature.

Alienation is the separation of humans from their own labor, nature, and other humans.

The culture industry is the mass production of standardized cultural products, the use of culture to manipulate and control the masses, and the commodification of culture.

One-dimensional society is a society in which all aspects of life are dominated by a single ideology, there is no room for dissent or opposition, and all individuals are conformist and obedient.

Jürgen Habermas, Axel Honneth, and Nancy Fraser are all key figures in the second generation of the Frankfurt School.

Communicative action is a form of communication that is based on mutual understanding and respect, free from domination and coercion, and aimed at reaching consensus.

The public sphere is a space in which public opinion is formed, citizens can freely express their views, and democratic deliberation takes place.

Deliberative democracy is a form of democracy in which citizens deliberate about public issues, have a say in decision-making, and are able to hold their representatives accountable.

The Structural Transformation of the Public Sphere, The Theory of Communicative Action, and Recognition or Misrecognition are all key works of the second generation of the Frankfurt School.

Recognition is the acknowledgment of the value and worth of a person, the respect for the rights and freedoms of a person, and the acceptance of the differences of a person.

Misrecognition is the denial of the value and worth of a person, the disrespect for the rights and freedoms of a person, and the rejection of the differences of a person.