impertinent vs subnormal

impertinent

noun

  • An impertinent individual. 

adj

  • irrelevant, useless. 

  • insolent, ill-mannered. 

subnormal

noun

  • A person whose abilities are less than normal. 

  • That part of the axis of a curved line which is intercepted between the ordinate and the normal. 

adj

  • denormal 

  • Less than normal. 

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