armoury vs weaponry

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. 

weaponry

noun
  • Weapons, collectively 

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