disdain vs sour grapes

disdain

noun
  • A feeling of contempt or scorn. 

verb
  • To regard (someone or something) with strong contempt. 

sour grapes

noun
  • A putting down or expression of disdain about something that one desires but cannot have. 

  • Things that somebody pretends to despise because they cannot obtain or have them. 

  • Grapes that are acid due to lacking maturity. 

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