caw vs yowl

caw

noun
  • The harsh cry of a crow. 

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

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

yowl

noun
  • A prolonged, loud cry, like the sound of an animal; a wail; a howl. 

verb
  • Utter a yowl. 

  • Express by yowling; utter with a yowl. 

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