approbation vs criticism

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. 

criticism

noun
  • The act of criticising; a critical judgment passed or expressed 

  • A critical observation or detailed examination and review. 

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