invasion vs violation

invasion

noun
  • The entry without consent of an individual or group into an area where they are not wanted. 

  • A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government. 

  • The breaching of the skin barrier. 

  • The spread of cancer cells, bacteries and such to the organism. 

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 invasion and violation occurred in a corpus of books? (source: Google Ngram Viewer )