approbative vs understanding

approbative

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

adj
  • Sanctioning officially, giving authorization or approval to something. 

  • Expressing approval. 

understanding

noun
  • The act of one that understands or comprehends; comprehension; knowledge; discernment. 

  • Opinion, judgement or outlook. 

  • An informal contract; mutual agreement. 

  • A reconciliation of differences. 

  • Sympathy. 

  • Reason or intelligence, ability to grasp the full meaning of knowledge, ability to infer. 

adj
  • Showing compassion, tolerance, and forbearance. 

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