approbation vs bells

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. 

bells

noun
  • Ship's bells; the strokes on a ship's bell, every half-hour, to mark the passage of time. 

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