The term "culture" refers to the complex collection of knowledge, folklore, language, rules, rituals, habits, lifestyles, attitudes, beliefs, and customs that link and give a common identity to a particular group of people at a specific point in time.

All social units develop a culture. Even in two-person relationships, a culture develops over time. In friendship and romantic relationships, for example, partners develop their own history, shared experiences, language patterns, rituals, habits, and customs that give that relationship a special character—a character that differentiates it in various ways from other relationships. Examples might include special dates, places, songs, or events that come to have a unique and important symbolic meaning for two individuals.

Groups also develop cultures, composed of the collection of rules, rituals, customs, and other characteristics that give an identity to the social unit. Where a group traditionally meets, whether meetings...