citizenship vs liberation

citizenship

noun
  • The state of being a citizen, in its various senses. 

  • The status of being a citizen, in its various senses. 

liberation

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

  • The achievement of equal rights and status. 

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