#personal_relation__personal_relationship  a relation between persons
  supertype:  human_relationship__humanrelationship__relationship  a relation between people; (`relationship' is often used where `relation' would serve (as in "the relationship between inflation and unemployment")) preferred usage of `relationship' is for human relations or states of relatedness; "the relationship between mothers and children"
  subtype:  bonding  a close personal relationship that forms between people (as between husband and wife or parent and child)
     subtype:  female_bonding  the formation of a close personal relationship between women
     subtype:  male_bonding  the formation of a close personal relationship between men; "the rituals known as male bonding do not necessarily involve drinking beer together"
     subtype:  maternal-infant_bonding  the attachment that forms between an infant and its mother beginning at birth; "maternal-infant bonding influences the child's psychological and physical development"
  subtype:  obligation.personal_relation  a personal relation in which one is indebted for a service or favor

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