Kinship is a relationship between any entities that share a genealogical origin, through biological, cultural or historical descent. In anthropology the kinship system includes people related both by descent and marriage while usage in biology includes descent and mating.

Human kinship relations through marriage are commonly called “affinity” in contrast to “descent” (also called “consanguinity”), although the two may overlap in marriages among those of common descent. Family relations as socio-cultural genealogy lead back to gods, animals that were in the area or natural phenomena. Kinship institutions are necessary for people to develop and fulfill their sexual and emotional needs, to organize daily life, and to raise new generations of children. But current kinship relations elevate men above women and children, oppress homosexuals and warp human sexual and emotional potentials.