nine vs slingshot

nine

noun
  • A nine-millimeter semi-automatic pistol. 

  • A playing card with nine pips. 

  • A baseball club, team, or lineup (composed of nine players). 

  • The digit or figure 9. 

  • A statistical unit of proportion (of reliability, purity, etc.). 

num
  • Describing a group or set with nine elements. 

  • A numerical value equal to 9; the number following eight and preceding ten. 

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 nine and slingshot occurred in a corpus of books? (source: Google Ngram Viewer )