civilian vs nonmilitary

civilian

adj
  • Not related to the military, police or other governmental professions. 

noun
  • A person following the pursuits of civil life, especially one who is not an active member of the armed forces. 

  • A person who does not belong to a particular group or engage in a particular activity, an outsider. 

  • One skilled in civil law. 

  • A student of civil law at a university or college. 

nonmilitary

adj
  • Not military; civilian. 

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