exhortation vs paraenesis

exhortation

noun
  • The act or practice of exhorting; the act of inciting to laudable deeds; incitement to that which is good or commendable. 

  • Language intended to incite and encourage 

paraenesis

noun
  • Advice or exhortation, particularly of a moral or religious nature. 

  • A warning of impending evil. 

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