crossbow vs shortsword

crossbow

noun
  • A mechanised weapon, based on the bow and arrow, that shoots bolts. 

  • A portable ballista that can be held in the hand. 

shortsword

noun
  • A sword of a class generally shorter than one meter, but longer than a dagger. 

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