approbative vs reassuring

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. 

reassuring

adj
  • That reassures; causing comfort or confidence. 

noun
  • reassurance 

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