scion vs withy

scion

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

  • A guardian. 

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

  • The heir to a throne. 

withy

noun
  • A long flexible twig of the osier; a withe. 

  • The osier (Salix viminalis), a type of willow. 

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