The concept of kinship is very important for Anthropology. The bond of blood or marriage that binds people together in a group is called kinship. There emerges mainly two types of kinship.
Based on blood ties : People who are related to each other based on blood ties are said to be Consanguineous kinship.
E.g.: Siblings. Mother N Daughter Father N Son.
Based on marital ties : People who are related to each other through the social institution of marriage are termed as affinal kins of each other.
E.g.: Husband N Wife Brother-in-Law Sister-in-Law. etc.