crankshaft vs curve

crankshaft

verb
  • To deform in such a manner that part of the rod or bolt is displaced sideways, offset from the longitudinal axis of the part, but remains parallel with the part's main longitudinal axis, with the final shape somewhat resembling a crankshaft. 

noun
  • A rotating shaft that drives (or is driven by) a crank. 

curve

verb
  • To bend or turn gradually from a given direction. 

  • To bend; to crook. 

  • To grade on a curve (bell curve of a normal distribution). 

  • (slang) To reject, to turn down romantic advances. 

  • To cause to swerve from a straight course. 

noun
  • A grading system based on the scale of performance of a group used to normalize a right-skewed grade distribution (with more lower scores) into a bell curve, so that more can receive higher grades, regardless of their actual knowledge of the subject. 

  • An algebraic curve; a polynomial relation of the planar coordinates. 

  • A one-dimensional figure of non-zero length; the graph of a continuous map from a one-dimensional space. 

  • A one-dimensional continuum. 

  • A simple figure containing no straight portions and no angles; a curved line. 

  • A gentle bend, such as in a road. 

  • The attractive shape of a woman's body. 

  • A continuous map from a one-dimensional space to a multidimensional space. 

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