Three distinguishing features of a family from other small groups?

The family, although it is a small social group, has a number of specific features. First, the family is built on consanguinity. People who marry form a new unit of society. Secondly, it is a community of everyday life. Within the framework of one family, microeconomic relations are formed, the family is an elementary unit of the state’s economy. She runs her own household, has her own budget, expenditure and income. Thirdly, the main function and distinctive feature of the family is the orientation towards the reproduction of offspring, their upbringing and primary socialization.