head-on vs strident

head-on

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

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

noun
  • A collision from the front. 

adv
  • With the front of a vehicle. 

  • With direct confrontation. 

strident

adj
  • Grating or obnoxious 

  • Loud; shrill, piercing, high-pitched; rough-sounding 

  • Vigorous; making strides 

noun
  • One of a class of s-like fricatives produced by an airstream directed at the upper teeth. 

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