inoperative vs noneffective

inoperative

adj

  • Not working or functioning; either idle or broken. 

  • No longer legally binding. 

noneffective

adj

  • Not effective. 

  • Not able to assume active duty. 

noun

  • A member of the military who is unable to assume active duty. 

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