armament vs armoury

armament

noun
  • A body of forces equipped for war. 

  • The process of building up military capacity. 

  • Any equipment for resistance. 

  • All the cannon and small arms collectively, with their equipments, belonging to a ship or a fortification. 

armoury

noun
  • A collection of weapons and materiel. 

  • Heraldry 

  • A place where arms are kept, an arsenal. 

  • A place where arms are made. 

  • The manufacture of armour and arms; arming, armouring. 

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