bird of ill omen vs malcontent

bird of ill omen

noun

  • A person who brings bad news 

malcontent

noun

  • A person who is not satisfied with current conditions; a discontented person, a rebel. 

adj

  • Dissatisfied with current conditions; disaffected, discontented, rebellious. 

How often have the words bird of ill omen and malcontent occurred in a corpus of books? (source: Google Ngram Viewer )