Examlex
Do a planet's rings last forever? Why or why not?
Phratry
A social or kinship group in some societies, often consisting of two or more clans or other kin groups.
Clan
A group of people united by actual or perceived kinship and descent, sharing a common ancestor and often organizing within larger tribal or social structures.
Ancestor
A person from whom one is descended, particularly from a distant past.
Kindred
A group of people related by blood or through marriage, often extended to include all relatives.
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