national anthem vs spiritual

national anthem

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

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

spiritual

noun
  • A Christian religious song, especially one in an African-American style, or a similar non-religious song. 

  • Any spiritual function, office, or affair. 

adj
  • Of or pertaining to the spirit or the soul. 

  • Consisting of spirit; not material; incorporeal. 

  • Of or relating to the intellectual and higher endowments of the mind; mental; intellectual. 

  • Not lay or temporal; relating to sacred things; ecclesiastical. 

  • Of or pertaining to spirits; supernatural. 

  • Of or pertaining to God or a place of worship; sacred, pure; (Christianity, specifically) inspired by the Holy Spirit. 

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