approbation vs discouragement

approbation

noun
  • The act of approving; an assenting to the propriety of a thing with some degree of pleasure or satisfaction; approval, sanction, commendation or official recognition. 

discouragement

noun
  • Anything that discourages. 

  • The act of discouraging. 

  • The loss of confidence or enthusiasm. 

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