dehortative vs dissuasive

dehortative

adj
  • dissuasive 

dissuasive

adj
  • Tending to dissuade, or divert from a measure or purpose; dehortatory. 

noun
  • That which dissuades; a disincentive. 

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