crusader vs man-of-war

crusader

noun
  • A fighter in the medieval Crusades who had taken the Cross. 

  • An American, especially a soldier or leader who wages war against Islamist militants. 

  • the crusaders of the Middle Ages 

  • A Westerner; a Christian, especially of European descent or a missionary. 

  • A person engaged in a crusade. 

  • (either attributively or in the plural) The United States and its Western allies. 

man-of-war

noun
  • A man whose occupation is fighting in wars; a soldier, a warrior. 

  • A powerful armed naval vessel, primarily one armed with cannon and propelled by sails; a warship. 

  • The Arctic skua (Stercorarius parasiticus). 

How often have the words crusader and man-of-war occurred in a corpus of books? (source: Google Ngram Viewer )