birdcall vs roop

birdcall

verb
  • To imitate the cry of a bird. 

noun
  • Any vocalisation of a bird. 

  • An imitation of this cry. 

  • A device used to imitate this cry, so as to lure and catch birds. 

roop

verb
  • To cry; shout. 

  • To roar; make a great noise. 

  • To make hoarse. 

noun
  • Hoarseness. 

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