bayonet vs rivet

bayonet

noun
  • A pin which plays in and out of holes made to receive it, and which thus serves to engage or disengage parts of the machinery. 

  • A pointed instrument of the dagger kind fitted on the muzzle of a musket or rifle, so as to give the soldier increased means of offence and defence. Originally, the bayonet was made with a handle, which needed to be fitted into the bore of the musket after the soldier had fired. 

verb
  • To compel or drive by the bayonet. 

  • To stab with a bayonet. 

rivet

noun
  • A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end. 

  • Any fixed point or certain basis. 

verb
  • To command the attention of. 

  • To attach or fasten parts by using rivets. 

  • To make firm or immovable. 

  • To install rivets. 

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