derogative vs scurrilous

derogative

adj
  • Of or pertaining to derogation; that derogates 

  • Disparaging; tending or intending to be belittling. 

noun
  • A derogatory word or word-form. 

scurrilous

adj
  • Coarse, vulgar, abusive, or slanderous. 

  • Given to vulgar verbal abuse; foul-mouthed. 

  • Gross, vulgar and evil. 

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