A social unit is a group of people who share a common identity and interact with each other in a particular way. The term can refer to a variety of different groups, including a TRIBE (5 letters), a CLAN (4 letters), a FAMILY (6 letters), a GANG (4 letters), and a SEPT (4 letters). A TRIBE is a large, organized group of people who share a common culture, language, and history. A CLAN is a smaller, less formal group of people who are related by blood or marriage. A FAMILY is a group of people related by blood or marriage, typically living together in the same household. A GANG is a group of people who associate with each other for criminal activities. A SEPT is a small group of people within a larger CLAN or TRIBE who share a common ancestor.