belibel vs blackguard

belibel

verb
  • To libel or traduce; to calumniate. 

blackguard

verb
  • To revile or abuse in scurrilous language. 

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

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

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