head-on vs rugged

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. 

rugged

adj
  • Violent; rude; boisterous 

  • Not neat or regular; irregular, uneven. 

  • Rough with bristly hair; shaggy. 

  • Having a rug or rugs. 

  • Covered with a rug. 

  • Stormy; turbulent; tempestuous 

  • Harsh; grating; unpleasant sounding or looking 

  • Rocky and bare of plantlife. 

  • Broken into sharp or irregular points; uneven; not smooth; rough. 

  • Designed to reliably operate in harsh usage environments and conditions. 

  • Harsh; austere; hard 

  • Vigorous; robust; hardy 

  • Sour; surly; frowning; wrinkled 

  • Strong, sturdy, well-built. 

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