dehortatory vs dissuasive

dehortatory

adj
  • Fitted or designed to dehort or dissuade. 

dissuasive

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

noun
  • That which dissuades; a disincentive. 

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