addict vs hobbyist

addict

noun
  • An adherent or fan (of something) 

  • A person who is addicted, especially to a harmful drug 

verb
  • To make (someone) become devoted to a given thing or activity; to cause to be addicted. 

  • To deliver (someone or something) following a judicial decision. 

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 addict and hobbyist occurred in a corpus of books? (source: Google Ngram Viewer )