audacious vs head-on

audacious

adj
  • Impudent, insolent. 

  • Showing willingness to take bold risks; recklessly daring. 

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. 

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