Social organization - the order of a social group as evidenced by the positions, roles, norms and other constraints that control behavior and ensure predictability. Social structure - the patterned and recurrent relationships among people and parts in a social organization. Culture - shared beliefs of group members that unite them and guide their behaviour. Aggregate - collection of individuals that happen to be at the same place at same time. Group - collection of people who because of sustained interaction have evolved a common structure and culture. Social interaction - when individuals act toward or respond to each other. Humans always concerned about how people will react to them. Social relationship - occurs when two or more people engage in enduring social interaction. Unified in at least some minimal way with the other members. Behave differently from the way they would in a fleeting interaction. Become part of a new entity different from their individual selves.