ammunition vs hunting knife

ammunition

noun
  • Articles used in charging firearms and ordnance of all kinds; as powder, balls, shot, shells, percussion caps, rockets, etc. 

  • Arguments and information that can be used against the other party in a conflict. 

verb
  • To supply with ammunition. 

hunting knife

noun
  • A large knife designed for use in hunting animals, usually with a smooth front edge and a back edge that is partially serrated for sawing. 

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