impertinent vs ungracious

impertinent

adj

  • insolent, ill-mannered. 

  • irrelevant, useless. 

noun

  • An impertinent individual. 

ungracious

adj

  • Not gracious; unkind or cold-hearted. 

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