hawk vs windhover

hawk

noun
  • A diurnal predatory bird of the family Accipitridae, smaller than an eagle. 

  • A plasterer's tool, made of a flat surface with a handle below, used to hold an amount of plaster prior to application to the wall or ceiling being worked on: a mortarboard. 

  • A noisy effort to force up phlegm from the throat. 

  • An advocate of aggressive political positions and actions. 

  • An uncooperative or purely-selfish participant in an exchange or game, especially when untrusting, acquisitive or treacherous. Refers specifically to the Prisoner's Dilemma, alias the Hawk-Dove game. 

  • Any diurnal predatory terrestrial bird of similar size and appearance to the accipitrid hawks, such as a falcon. 

  • Any of various species of dragonfly of the genera Apocordulia and Austrocordulia, endemic to Australia. 

verb
  • To hunt with a hawk. 

  • To sell; to offer for sale by outcry in the street; to carry (merchandise) about from place to place for sale; to peddle. 

  • To make an attack while on the wing; to soar and strike like a hawk. 

  • To expectorate, to cough up something from one's throat. 

  • To try to cough up something from one's throat; to clear the throat loudly. 

windhover

noun
  • The common kestrel (Falco tinnunculus). 

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