addict vs otaku

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. 

otaku

noun
  • One with an obsessive interest in something, particularly (originally derogatory) obsessive Japanese fans of anime or manga. 

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