Culture consists of the customs, knowledge, objects, and behaviors shared by a group of people. It has both material aspects like food and technology as well as nonmaterial aspects like beliefs and communication styles. Subcultures exist within larger cultures and may differ in their values. Countercultures deliberately oppose aspects of the main culture. Language plays a key role in transmitting culture and shaping reality. Nonverbal communication like gestures also varies across cultures. Norms are established standards of behavior maintained through both formal laws and informal understanding. People do not always follow norms and may face sanctions for violations. Values and symbols are also important parts of a culture.
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