Documented systems for tracing descent, arranging marriage, naming kin and organizing the household and family, spanning kinship terminology systems, descent rules, postmarital residence patterns, marriage systems and family structures, following the comparative kinship typology George Peter Murdock codified in Social Structure and standard kinship-studies scholarship since. Belongs here: a named kinship rule, terminology system or family structure studied comparatively across societies. Does not belong here: a specific documented custom accompanying kinship, such as a marriage payment or ritual bond, grouped under Ethnography and Cultural Practices, or a formal institution such as marriage or the family treated at the level of social institution rather than kinship rule, grouped under Institutions and Social Structures.