caw vs chortle

caw

noun
  • The harsh cry of a crow. 

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

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

chortle

noun
  • A similar sounding vocalisation of various birds. 

  • A joyful, somewhat muffled laugh, rather like a snorting chuckle. 

verb
  • To laugh with a chortle or chortles. 

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