bow and arrow vs crossbow

bow and arrow

noun
  • A weapon consisting of a bow and a supply of arrows, often kept in a quiver. 

crossbow

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

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

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