approbative vs encouraging

approbative

adj
  • Expressing approval. 

  • Sanctioning officially, giving authorization or approval to something. 

noun
  • A word or grammatical form which denotes a positive affect expressing the appreciation or approval of the speaker. 

encouraging

adj
  • supporting by giving encouragement 

  • giving courage, confidence or hope 

  • auspicious, or bringing good luck 

noun
  • encouragement 

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