luckless vs noneffective

luckless

adj

  • Unsuccessful, in a failing manner. 

  • Without luck. 

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