This document discusses several concepts related to culture, including ethnocentrism, cultural relativism, subculture, culture shock, cultural lag, and cultural dualism. Ethnocentrism is the belief that one's own culture is superior, while cultural relativism holds that no culture is superior and cultural beliefs are equally valid. Subcultures exist within societies and differ in language, dress, food, and other customs. Culture shock occurs when confronted with unfamiliar cultures, and cultural lag is the inability to adapt immediately to cultural changes. Cultural dualism refers to a culture influenced by another and practicing elements of both.