helve vs projectile

helve

noun
  • The handle or haft of a tool or weapon. 

  • A forge hammer lifted by a cam acting on the helve between the fulcrum and the head. 

verb
  • To furnish (an axe, etc.) with a helve. 

projectile

noun
  • an object intended to be or having been fired from a weapon. 

  • any object propelled through space by the application of a force. 

adj
  • Projecting or impelling forward. 

  • Caused or imparted by impulse or projection; impelled forward. 

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