barong vs crossbow

barong

noun
  • A cutting weapon similar to a cleaver, with a thick back and thin razor-like edge, used by the Moros of the Philippines. 

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 barong and crossbow occurred in a corpus of books? (source: Google Ngram Viewer )