kink vs knuckle

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. 

knuckle

verb
  • To bend the fingers. 

  • To apply pressure, or rub or massage with one's knuckles. 

  • To strike or punch. 

  • To yield. 

  • To land on the knuckle of a curve of a slope, after a jump off a ramp that precedes the slope. 

  • To touch one's forehead as a mark of respect. 

noun
  • The rounded point where a flat changes to a slope on a piste. 

  • A cut of meat. 

  • The curved part of the cushion at the entrance to the pockets on a cue sports table. 

  • A mechanical joint. 

  • The kneejoint of a quadruped, especially of a calf; formerly used of the kneejoint of a human being. 

  • Any of the joints between the phalanges of the fingers. 

  • A contrivance, usually of brass or iron, and furnished with points, worn to protect the hand, to add force to a blow, and to disfigure the person struck; a knuckle duster. 

  • A convex portion of a vessel's figure where a sudden change of shape occurs, as in a canal boat, where a nearly vertical side joins a nearly flat bottom. 

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