black hat vs offender

black hat

noun
  • A malicious hacker, one who violates computer security out of maliciousness or for personal gain. 

  • A villain or bad guy in a story, especially in a Western (a film or other work of the Western genre). 

  • A Haredi Jew; a member of an ultra-Orthodox Jewish community. 

offender

noun
  • A person who commits an offense against the law, a lawbreaker. 

  • One who gives or causes offense, or does something wrong. 

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