drivel vs nitty-gritty

drivel

noun
  • Nonsense; senseless talk. 

verb
  • To use up or to be used up. 

  • To move or travel slowly. 

  • To be weak or foolish; to dote. 

  • To talk nonsense; to talk senselessly; to drool. 

nitty-gritty

noun
  • The core or essence of something; the gist. 

How often have the words drivel and nitty-gritty occurred in a corpus of books? (source: Google Ngram Viewer )