What's the difference between relatives, friends and kinship?

1, relatives and friends refer to relatives and friends;

2. According to the causes of kinship, relatives can be divided into three categories: spouse, blood relatives and in-laws. Blood relatives include natural blood relatives and fictional blood relatives, the former refers to relatives who are related by the same ancestor; The latter refers to relatives who are not related by blood, but are legally recognized as having the same rights and obligations as blood relatives because they meet certain conditions, such as stepparents, stepchildren, adoptive parents, adopted children, etc. In-laws refer to relatives other than spouses who are mediated by marriage, including blood spouses, blood spouses and blood spouses. In-laws have rights and obligations only under special circumstances stipulated by law. 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.