kink vs sheathe

kink

verb
  • To form a kink or twist. 

  • To laugh loudly. 

  • To be formed into a kink or twist. 

  • To gasp for breath as in a severe fit of coughing. 

noun
  • A convulsive fit of coughing or laughter; a sonorous indraft of breath; a whoop; a gasp of breath caused by laughing, coughing, or crying. 

  • A positive 1-soliton solution to the sine-Gordon equation. 

  • A tight curl, twist, or bend in a length of thin material, hair etc. 

  • An unreasonable notion; a crotchet; a whim; a caprice. 

  • A difficulty or flaw that is likely to impede operation, as in a plan or system. 

  • Peculiarity or deviation in sexual behaviour or taste. 

  • A person with peculiar sexual tastes. 

sheathe

verb
  • To thrust (a sharp object like a sword, a claw, or a tusk) into something. 

  • To put (something such as a knife or sword) into a sheath. 

  • Of an animal: to draw back or retract (a body part) into the body, such as claws into a paw. 

  • To encase (something) with a protective covering. 

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