meaningless vs noneffective

meaningless

adj

  • Lacking meaning. 

  • Insignificant; not worthy of importance. 

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 meaningless and noneffective occurred in a corpus of books? (source: Google Ngram Viewer )