firebomber vs insurrectionary

firebomber

noun

  • One who carries out a firebombing attack. 

insurrectionary

noun

  • One who takes part in insurrection. 

adj

  • Pertaining to, or characterized by, insurrection. 

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