blackguard vs caitiff

blackguard

noun
  • The lowest servant in a household charged with pots, pans, and other kitchen equipment. 

verb
  • To act like a blackguard; to be a scoundrel. 

  • To revile or abuse in scurrilous language. 

caitiff

adj
  • Especially despicable; cowardly 

noun
  • A base or despicable person; a wretch 

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