Here's why:
* Lineage refers to a line of descent traced back to a common ancestor. It focuses on the direct line of ancestry and is often used to track family history and genealogy.
* Family typically refers to a group of people living together, often including parents and children.
* Clan is a group of families claiming descent from a common ancestor, often associated with a specific territory or social identity.
* Tribe is a larger social group often consisting of multiple clans or families, typically sharing a common culture, language, and territory.
While all these terms relate to groups of people with shared ancestry, lineage specifically emphasizes the direct line of descent from a common ancestor.