bon vivant vs gastronaut

bon vivant

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

gastronaut

noun
  • A person whose whole focus is narrowly directed to the enjoyment of fine food. 

  • A person with a keen appreciation for food. 

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