applause vs approbation

applause

noun
  • The act of applauding; approbation and praise publicly expressed by the clapping of hands, stamping or tapping of the feet, acclamation, huzzas, or other means; marked commendation. 

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. 

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