The phrase "proximity of blood" refers to the biological relationship between two or more individuals who share a common ancestor. However, there are alternative phrases that can be used to describe this relationship. These include "consanguinity," "blood relation," "kinship," "lineage," "heritage," and "family tie." Each of these terms expresses the idea of a shared genetic or familial connection between individuals. Whether used in legal proceedings, scientific research, or casual conversation, these synonyms for "proximity of blood" are useful for describing the complex and varied bonds that tie people together.