The document defines and provides examples of various social concepts related to ideology, individualism, collectivism, liberalism, self-interest, competition, freedom, rule of law, private property, collective responsibility, collective interest, cooperation, economic equality, collective norms, public property, belief, value, individual identity, and collective identity. Key ideas include that an ideology reflects group beliefs and values, individualism places importance on individual rights over groups, and collectivism prioritizes group needs over individuals.