head-on vs simply

head-on

adv
  • With direct confrontation. 

  • With the front of a vehicle. 

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

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

noun
  • A collision from the front. 

simply

adv
  • Frankly. 

  • In a simple way or state; considered in or by itself; without addition; alone. 

  • Plainly; without art or subtlety 

  • Merely; solely. 

  • absolutely, positively. 

  • Foolishly; stupidly. 

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