citizenship vs exemption

citizenship

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

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

exemption

noun
  • An act of exempting. 

  • The state of being exempt; immunity. 

  • Freedom from a defect or weakness. 

  • A deduction from the normal amount of taxes. 

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