holler vs roop

holler

verb
  • To yell or shout. 

  • To call out one or more words 

  • To complain, gripe 

noun
  • A field holler. 

  • Any communication to get somebody's attention. 

  • A yell, shout. 

roop

verb
  • To cry; shout. 

  • To roar; make a great noise. 

  • To make hoarse. 

noun
  • Hoarseness. 

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