derogative vs dismissive

derogative

adj
  • Of or pertaining to derogation; that derogates 

  • Disparaging; tending or intending to be belittling. 

noun
  • A derogatory word or word-form. 

dismissive

adj
  • Showing disregard, indicating rejection, serving to dismiss. 

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