What is the relationship between brother and sister?

What is the relationship between brother and sister?

Brother-sister relationship belongs to brother-sister relationship. Brother-sister relationship is an interpersonal relationship arising from marriage or childbirth. Brother and sister refer to two people who are related by blood. A man and a woman are peers, and the man is older than the woman. Sibling relationship, as well as other kinship relationships derived from it, is an innate relationship of human beings, which existed at the beginning of human society and was the earliest social relationship.

The legal kinship in our country includes husband and wife, parents, children, brothers and sisters, grandparents and grandparents, grandchildren and grandchildren, daughter-in-law and in-laws, son-in-law and in-laws and other collateral blood relatives within three generations, such as uncles, uncles, aunts, nephews, cousins and so on.

Relatives are not equal to family members, and people with relatives may belong to different families; So family members are not absolutely related.

Blood relatives can also be divided into direct blood relatives and collateral blood relatives. The former refers to the relatives who have given birth to themselves and their generations. The latter refers to relatives who are indirectly related to each other except direct blood relatives.