epee vs slingshot

epee

noun
  • A sharp-pointed dueling sword with a bell-shaped guard, used (with the end blunted) in sport fencing. 

slingshot

noun
  • A Y-shaped stick with an elastic sling between the arms used for shooting small projectiles. 

  • A stationary, often triangular object that launches any ball that hits its longest side back at a high force, now usually located above the flipper and between it and the inlane, with one each for both lower flippers. 

  • A sling bikini. 

  • An implement of a broad fabric worn around and connecting both bicipites brachii to support benching the most heavy weights. 

verb
  • To use the gravity of a moving planet to add momentum to a spacecraft. 

  • To move or cause to move in a manner resembling a projectile shot from a slingshot. 

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