estrangement vs propitiation

estrangement

noun
  • The state of being alien; foreign, non-native. 

  • The act of estranging; the act of alienating; alienation. 

propitiation

noun
  • The death of Christ as a basis for the forgiveness of sin. 

  • The act of propitiating; placation, atonement, similar to expiation but with the added concept of appeasement of anger. 

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