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Descent group
A group based on belief in shared ancestry.
Family of orientation
The nuclear family in which one is born and grows up.
Family of procreation
The nuclear family established when one marries and has children.
Neolocality
The living situation in which a couple establishes new residence.
Expanded family household
A household that includes a group of relatives other than, or in addition to, a married couple and their children.
Extended family household
A household with three or more generations.
Unilinear descent
Matrilineal or patrilineal descent.
Lineage
A unilineal descent group based on demonstrated descent
Clan
A unilineal descent group based on stipulated descent.
Ambilineal descent
A flexible descent rule, neither patrilineal nor matrilineal.
Kinship calculation
The relationships based on kinship that people recognize in a particular society, and how they talk about those relationships.
Ego
The position from which one views an egocentric genealogy.
Kin terms
The words used for different relatives in a particular language and system of kinship calculation.
Bilateral kinship calculation
Kin ties calculated equally through both sexes.
Lineal kinship terminology
Four parental kin terms - M, F, FB=MB, and MZ=FZ.
Lineal relative
Ego's direct ancestors and descendants.
Collateral relative
A relative outside ego's direct line, e.g., B, Z, FB, MZ.
Affiances
Relatives by marriage.
Bifurcate merging kinship terminology
Four parental kin terms - M=MZ, F=FB, MB, and FZ each stand alone.
Generational kinship terminology
Just two parental kin terms - M=MZ=FZ and F=FB=MB.
Bifurcate collateral kinship terminology
Six separate parental kin terms - M, F, MB, MZ, FB, and FZ.