armament vs long Tom

armament

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

  • A body of forces equipped for war. 

  • The process of building up military capacity. 

  • Any equipment for resistance. 

long Tom

noun
  • Any of various early cannon and field guns. 

  • A high-powered lens for long-distance filming or photography. 

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