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An extended family is a family group that extends beyond the nuclear family, including relatives such as grandparents, aunts, uncles, and cousins. It often involves multiple generations living together or maintaining close relationships.
A nuclear family consists of two parents and their children living together as a single unit.
Kinship refers to the culturally defined relationships between individuals who are commonly thought of as having family ties.
Household: A household includes all the people who occupy a housing unit, regardless of their relationship to each other