doom and gloom vs sinister

doom and gloom

noun
  • Something considered indicative of feelings of pessimism and despair. 

sinister

adj
  • On the left side of a shield from the wearer's standpoint, and the right side to the viewer. 

  • Inauspicious, ominous, unlucky, illegitimate (as in bar sinister). 

  • Evil or seemingly evil; indicating lurking danger or harm. 

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