caw vs whoop

caw

verb
  • To make the harsh cry of a crow, rook, or raven. 

noun
  • The harsh cry of a crow. 

intj
  • A rendering of the vocalisation of a crow or other corvid. 

whoop

verb
  • To shout, to yell. 

  • To make a whoop. 

  • To cough or breathe with a sonorous inspiration, as in whooping cough. 

  • To beat, to strike. 

  • To defeat thoroughly. 

noun
  • A bump on a racetrack. 

  • A loud, eager cry, usually of joy. 

  • A gasp, characteristic of whooping cough. 

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