anthem vs chanson

anthem

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

  • A very popular song or track. 

  • A hymn of praise or loyalty. 

verb
  • To celebrate with anthems. 

chanson

noun
  • Any song with French words, but more specifically a classic, lyric-driven French song. 

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