legitimacy vs licitness

legitimacy

noun
  • The quality or state of being legitimate or valid; validity. 

  • Lawfulness of birth or origin; directness of descent as affecting the royal succession. 

licitness

noun
  • The property of being licit, legalness, appropriateness. 

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