Blood-relationship is a term that describes the connection or kinship between family members. There are many other synonyms that can be used to describe this type of relationship, including consanguinity, lineage, ancestry, relation, kinsmanship, and consanguineous affection. Consanguinity refers to the genetic connection between individuals who share the same biological lineage. Lineage describes a person's descent from their ancestors. Ancestry is the history of one's family lineage. Relation refers to a person who is connected to another by blood, marriage, or adoption. Kinsmanship is the state of being related, while consanguineous affection denotes the emotional bond between family members. In short, there are many synonyms that can be used to describe the concept of blood-relationship within a family.