deprecative vs derogative

deprecative

adj
  • Tending to deprecate; disapproving. 

derogative

adj
  • Disparaging; tending or intending to be belittling. 

  • Of or pertaining to derogation; that derogates 

noun
  • A derogatory word or word-form. 

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