avocation vs hobbyist

avocation

noun
  • A hobby or recreational or leisure pursuit. 

  • The calling of a case from an inferior to a superior court. 

  • That which calls one away from one's regular employment or vocation. 

  • Pursuits; duties; affairs which occupy one's time; usual employment; vocation. 

hobbyist

noun
  • A person who is interested in an activity or a subject as a hobby. 

  • A client in a girlfriend experience. 

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