aggression vs placation

aggression

noun
  • Hostile or destructive behavior or actions. 

  • The practice or habit of launching attacks. 

  • The act of initiating hostilities or invasion. 

placation

noun
  • A process or act of placating; appeasement or an expression of appeasement. 

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