ARC vs Army

ARC

name

  • The Colombian Navy (Armada de la República de Colombia). 

adj

  • ship's prefix for warships of the navy of Colombia. 

Army

name

  • A sports team representing the US Military Academy at West Point. 

  • Hexagram 7 of the I Ching (䷆) 

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