incivil vs insulting

incivil

adj
  • Displaying a lack of courtesy; rude, impolite. 

  • Uncivilized, barbarous. 

insulting

adj
  • Containing insult, or having the intention of insulting. 

noun
  • The act of giving insult. 

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