caitiff vs monstrous

caitiff

adj
  • Especially despicable; cowardly 

noun
  • A base or despicable person; a wretch 

monstrous

adj
  • Hideous or frightful. 

  • Enormously large. 

  • Of, or relating to a mythical monster; full of monsters. 

  • Freakish or grotesque. 

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