bob vs windmill

bob

noun
  • Any of various hesperiid butterflies. 

  • A small wheel, made of leather, with rounded edges, used in polishing spoons, etc. 

  • A working beam in a steam engine. 

  • An unspecified amount of money. 

  • The docked tail of a horse. 

  • A graphical element, resembling a hardware sprite, that can be blitted around the screen in large numbers. 

  • A particular style of ringing changes on bells. 

  • A bobsleigh. 

  • A blow; a shake or jog; a rap, as with the fist. 

  • A bobbing motion; a quick up and down movement. 

  • A curtsy. 

  • A bob haircut. 

  • Any round object attached loosely to a flexible line, a rod, a body part etc., so that it may swing when hanging from it. 

  • The dangling mass of a pendulum or plumb line. 

  • A short line ending a stanza of a poem. 

  • A bobber (buoyant fishing device). 

  • The short runner of a sled. 

verb
  • To bobsleigh. 

  • To strike with a quick, light blow; to tap. 

  • To curtsy. 

  • To move (something) as though it were bobbing in water. 

  • To move gently and vertically, in either a single motion or repeatedly up and down, at or near the surface of a body of water, or similar medium. 

  • To cut (hair) into a bob haircut. 

  • To shorten by cutting; to dock; to crop. 

windmill

noun
  • Any of various large papilionid butterflies of the genus Byasa, the wings of which resemble the vanes of a windmill. 

  • A pitch where the pitcher swings his arm in a circular motion before throwing the ball. 

  • A child's toy consisting of vanes mounted on a stick that rotate when blown by a person or by the wind. 

  • Any of various muscle exercises in which a large deal of the body makes a great circle, typically one where a kettlebell is raised overhead and the torso is rotated to the other side with the hand reaching its foot (hitting the core, glutes, hamstrings, trapezius, rhomboids, deltoids and rotator cuffs) but sometimes even a windshield wiper. 

  • An imaginary enemy, but presented as real. 

  • A guitar move where the strumming hand mimics a turning windmill. 

  • A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails. 

  • The structure containing such machinery. 

  • The false shower. 

  • A breakdancing move in which the dancer rolls his/her torso continuously in a circular path on the floor, across the upper chest, shoulders and back, while twirling the legs in a V shape in the air. 

  • A dunk where the dunker swings his arm in a circular motion before throwing the ball through the hoop. 

verb
  • To rotate with a sweeping motion. 

  • Of a rotating part of a machine, to (become disengaged and) rotate freely. 

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