equitability vs licitness

equitability

noun
  • The quality of being equitable; equitableness. 

  • The extent of the representation by equal numbers of individuals of the different species of a given community. 

licitness

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

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