excellence vs vertu

excellence

noun
  • An excellent or valuable quality; something at which any someone excels; a virtue. 

  • The quality of being excellent; brilliance 

  • Something in which one excels. 

vertu

noun
  • Moral worth; virtue, virtuousness. 

  • Especially with reference to the writings of Machiavelli (1469–1527): the requisite qualities for political or military success; vitality, determination; power. 

  • The fine arts as a subject of study or expertise; understanding of arts and antiquities. 

  • Objets d'art collectively. 

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