anthem vs doxology

anthem

noun
  • A hymn of praise or loyalty. 

  • A choral or vocal composition, often with a religious or political lyric. 

  • A very popular song or track. 

verb
  • To celebrate with anthems. 

doxology

noun
  • An expression of praise to God, especially a short hymn sung as part of a Christian worship service. 

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