What does the term "kinship" refer to in the context of families?

A person's familial connections and relations

Family life is a concept we often take for granted, assuming that all families are identical in structure and dynamics. However, families exhibit significant variations in terms of their size, relationships among members, and shared activities. In many cases, family members come together to share resources, perform rituals, and work as a cohesive unit. Moreover, families are integral components of broader networks of individuals known as relatives or kinfolk, with various societies defining familial ties in diverse ways. While blood relations are commonly considered the foundation of familial bonds, the definition of family and kinship differs across cultures, with some recognizing cousins as blood relatives and others not.