ARMY vs lancers

ARMY

noun
  • An individual fan of the K-pop boy band BTS. 

  • The fandom of the K-pop boy band BTS. 

lancers

noun
  • The music for a lancers. 

  • A traditional dance for eight or sixteen couples, originating from a 19th century quadrille. 

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