nation vs national anthem

nation

noun
  • A sovereign state. 

  • Damnation. 

  • An association of students based on its members' birthplace or ethnicity. 

  • A historically constituted, stable community of people, formed based on a common language, territory, economic life, ethnicity and/or psychological make-up manifested in a common culture. 

adv
  • Extremely, very. 

national anthem

noun
  • The official song of a nation or sovereign state, generally of a patriotic nature and played at events to celebrate or honor said state. 

  • The official song of a constituent state of a country. 

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