malcontent vs rebellious

malcontent

adj

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

noun

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

rebellious

adj

  • Showing rebellion. 

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