placation vs restoration

placation

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

restoration

noun
  • The process of bringing an object back to its original state; the process of restoring something. 

  • The return of a former monarchy or monarch to power, usually after having been forced to step down. 

  • The receiving of a sinner to divine favor. 

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