exoneration vs liberation

exoneration

noun
  • An act of disburdening, discharging, or freeing morally from a charge or imputation. 

  • The state of being disburdened or freed from a charge. 

liberation

noun
  • The act of liberating or the state of being liberated. 

  • The achievement of equal rights and status. 

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