baby of the family vs scion

baby of the family

noun
  • A member of an immediate family who behaves as, or is treated as though they were the youngest member of a family. 

  • The youngest member of an immediate family. 

  • An adult member of an immediate family who is treated by others in the family, especially the parents, as though they were a child. 

scion

noun
  • A descendant, especially a first-generation descendant of a distinguished family. 

  • A detached shoot or twig containing buds from a woody plant, used in grafting; a shoot or twig in a general sense. 

  • A guardian. 

  • The heir to a throne. 

How often have the words baby of the family and scion occurred in a corpus of books? (source: Google Ngram Viewer )