relation an abstraction belonging to or characteristic of two entities or parts together
anthropology the social science that studies the origins and social relationships of human beings
phylogenetic relation,
affinity a natural attraction or feeling of kinship; "an affinity for politics"; "the mysterious affinity between them"; "James's affinity with Sam"
sistership,
sisterhood a religious society of women who live together as sisters (especially an order of nuns)
brotherhood the feeling that men should treat one another like brothers
kinship -
a close connection marked by community of interests or similarity in nature or character; "found a natural affinity with the immigrants"; "felt a deep kinship with the other students"; "anthropology's kinship with the humanities"
Kinship is a relationship between any entities that share a genealogical origin, through either biological, cultural, or historical descent. And descent groups, lineages, etc. are treated in their own subsections, see Contents below.
