placation vs resentment

placation

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

resentment

noun
  • Anger or displeasure stemming from belief that one has been wronged or betrayed by others; indignation. 

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