warlord vs warmonger

warlord

noun
  • A high military officer in a warlike nation. 

  • A local ruler or bandit leader usually where the government is weak. 

warmonger

noun
  • Someone who advocates war; a militarist. 

verb
  • To advocate war. 

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