despairing vs doom and gloom

despairing

noun

  • A mood or display of despair. 

adj

  • Feeling, expressing, or caused by despair; hopeless. 

doom and gloom

noun

  • Something considered indicative of feelings of pessimism and despair. 

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