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How did clans differ from bands in traditional Aboriginal society?

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Aboriginal people of Galiwnku Island in Australia — Australian Aboriginal peoples Aboriginal people from Galiwnku Island gathering to watch the proceedings at which Prime Minister Kevin Rudd formally apologized to the Aboriginal peoples of Australia for their mistreatment under earlier Australian governments, February 2008.

In traditional Aboriginal society, clans and bands served distinct social and functional roles.

Clans

Clans are social groups defined by kinship, where members claim descent from a common founding ancestor through either the male line (patriclan) or the female line (matriclan). These groups are often associated with specific territories or "estates" and play a significant role in religious life, particularly regarding the guardianship of sacred sites and the performance of rituals to sustain the land.1

Bands

In contrast, the band is the fundamental economic and face-to-face group. It is characterized by the following:1
* Composition: It typically consists of two or more families.1
* Function: It is the primary unit for daily interaction, travel, and food gathering.1
* Flexibility: Unlike the more rigid structure of a clan, a band is highly mobile and flexible in size and composition, allowing it to respond quickly to ecological changes.1

While a band’s "range"—the area it covers while foraging—usually includes the members' ancestral estate, bands are distinct from the estate group itself, which remains a collective, land-holding entity.1