lastborn vs scion

lastborn

noun
  • The youngest child of a family. 

  • The youngest member of any company or organization. 

adj
  • Born last in a family; youngest in a the family. 

  • Younger than anyone else in a group. 

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 lastborn and scion occurred in a corpus of books? (source: Google Ngram Viewer )