acquaintance rape vs violation

acquaintance rape

noun
  • Rape by someone known to the victim, such as date rape, marital rape, or rape by a teacher or supervisor. 

violation

noun
  • Rape; sexual activity forced on another person without their consent. 

  • An infraction or a failure to follow a rule. 

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