impaired vs noneffective

impaired

adj

  • Rendered less effective. 

  • inebriated, drunk. 

noun

  • A criminal charge for driving a vehicle while impaired. 

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