caw vs roop

caw

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

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

noun
  • The harsh cry of a crow. 

roop

verb
  • To cry; shout. 

  • To roar; make a great noise. 

  • To make hoarse. 

noun
  • Hoarseness. 

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