bon vivant vs bon viveur

bon vivant

noun
  • A person who enjoys luxurious things in life, especially good food and drink; a man about town. 

bon viveur

noun
  • Synonym of bon vivant, a person who enjoys the good things in life, especially good food and drink. 

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