doom and gloom vs portentous

doom and gloom

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

portentous

adj
  • Of momentous or ominous significance. 

  • Ominously prophetic. 

  • Puffed up with vanity. 

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