derisive vs scurrilous

derisive

adj
  • Expressing or characterized by derision; mocking; ridiculing. 

  • Deserving or provoking derision or ridicule. 

noun
  • A derisive remark. 

scurrilous

adj
  • Given to vulgar verbal abuse; foul-mouthed. 

  • Coarse, vulgar, abusive, or slanderous. 

  • Gross, vulgar and evil. 

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