invert vs kink

invert

verb
  • To turn (something) upside down or inside out; to place in a contrary order or direction. 

  • To divert; to convert to a wrong use. 

  • To turn (the foot) inwards. 

  • To move (the root note of a chord) up or down an octave, resulting in a change in pitch. 

  • To undergo inversion, as sugar. 

adj
  • Subjected to the process of inversion; inverted; converted. 

noun
  • The base of a tunnel on which the road or railway may be laid and used when construction is through unstable ground. It may be flat or form a continuous curve with the tunnel arch. 

  • A skateboarding trick where the skater grabs the board and plants a hand on the coping so as to balance upside-down on the lip of a ramp. 

  • An invertebrate. 

  • An inverted arch (as in a sewer). 

  • An elevation of a pipe at a certain point along the pipe. 

  • The lowest point inside a pipe at a certain point. 

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. 

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