citizenship vs nationality

citizenship

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

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

nationality

noun
  • A people sharing a common origin, culture and/or language, and possibly constituting a nation-state. 

  • National origin or identity; legal membership of a particular nation or state, by origin, birth, naturalization, ownership, allegiance or otherwise. 

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