| bridewealth | A customary gift before, at, or after marriage from the husband and his kin to the wife and her kin; see also progeny price.
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| clan | Unilineal descent group based on stipulated descent.
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| descent group | A permanent social unit whose members claim common ancestry; fundamental to tribal society.
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| dowry | A marital exchange in which the wife's group provides substantial gifts to the husband's family.
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| endogamy | Marriage between people of the same social group.
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| exogamy | Mating or marriage outside one's kin group; a cultural universal.
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| extended family | Expanded household including three or more generations.
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| family of orientation | Nuclear family in which one is born and grows up.
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| family of procreation | Nuclear family established when one marries and has children.
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| incest | Sexual relations with a close relative.
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| levirate | Custom by which a widow marries the brother of her deceased husband.
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| lineage | Unilineal descent group based on demonstrated descent.
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| matrilineal descent | Unilineal descent rule in which people join the mother's group automatically at birth and stay members throughout life.
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| matrilocality | Customary residence with the wife's relatives after marriage, so that children grow up in their mother's community.
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| neolocality | Postmarital residence pattern in which a couple establishes a new place of residence rather than living with or near either set of parents.
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| patrilineal descent | Unilineal descent rule in which people join the father's group automatically at birth and stay members throughout life.
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| patrilocality | Customary residence with the husband's relatives after marriage, so that children grow up in their father's community.
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| plural marriages | Marriage of a man to two or more women (polygyny) or marriage of a woman to two or more men (polyandry) at the same time; see also polygamy.
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| polyandry | Variety of plural marriage in which a woman has more than one husband.
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| polygyny | Variety of plural marriage in which a man has more than one wife.
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| progeny price | A gift from the husband and his kin to the wife and her kin before, at, or after marriage; legitimizes children born to the woman as members of the husband's descent group.
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| sororate | Custom by which a widower marries the sister of the deceased wife.
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| unilineal descent | Matrilineal or patrilineal descent.
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