discrepancy vs let-out

discrepancy

noun
  • The state or quality of being discrepant. 

  • An inconsistency between facts or sentiments. 

let-out

noun
  • The act or an instance of releasing or letting out something. 

  • An opportunity to avoid or escape from a difficult or unpleasant situation. 

How often have the words discrepancy and let-out occurred in a corpus of books? (source: Google Ngram Viewer )