This document defines culture and discusses key aspects of cultural variation. It explains that culture is the specialized lifestyle of a group, including their beliefs, knowledge, values, customs, behaviors, and artifacts. It also outlines several dimensions along which cultures can vary, such as individualism vs collectivism, masculine vs feminine orientations, high vs low context communication, and long vs short-term time orientations. The document emphasizes that these cultural dimensions represent continua rather than absolute categories. It concludes by discussing intercultural communication, culture shock, and the importance of understanding cultural differences.