head-on vs rude

head-on

adj
  • Direct, abrupt, blunt or unequivocal; not prevaricating. 

  • Of a collision, from the front or in the direction of motion. 

adv
  • With the front of a vehicle. 

  • With direct confrontation. 

noun
  • A collision from the front. 

rude

adj
  • Violent; abrupt; turbulent. 

  • Somewhat obscene, pornographic, offensive. 

  • Lacking in refinement or civility; bad-mannered; discourteous. 

  • Undeveloped, unskilled, inelegant. 

  • Hearty, vigorous; found particularly in the phrase rude health. 

  • Crudely made; primitive. 

  • Lacking refinement or skill; untaught; ignorant; raw. 

How often have the words head-on and rude occurred in a corpus of books? (source: Google Ngram Viewer )