armoury vs munition

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. 

munition

noun
  • Materials of war: armaments, weapons and ammunition. 

  • Bombs, rockets, missiles (complete explosive devices, in contrast to e.g. guns). 

verb
  • To supply with munitions. 

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