addict vs pessimist

addict

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. 

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

  • An adherent or fan (of something) 

pessimist

noun
  • Someone who habitually expects the worst outcome; one who looks on the dark side of things. 

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