noneffective vs powerless

noneffective

adj

  • Not able to assume active duty. 

  • Not effective. 

noun

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

powerless

adj

  • Lacking legal authority. 

  • Lacking sufficient power or strength. 

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