head-on vs tilt

head-on

noun
  • A collision from the front. 

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

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

adv
  • With the front of a vehicle. 

  • With direct confrontation. 

tilt

noun
  • A thrust, as with a lance. 

  • An attempt at something, such as a tilt at public office. 

  • A jousting contest. (countable) 

  • A canvas covering for carts, boats, etc. 

  • Any covering overhead; especially, a tent. 

  • The controlled vertical movement of a camera, or a device to achieve this. 

  • A tilt hammer. 

  • A slope or inclination. 

  • The inclination of part of the body, such as backbone, pelvis, head, etc. 

verb
  • To slope or incline (something); to slant. 

  • To point or thrust (a weapon). 

  • To intentionally let the ball fall down to the drain by disabling flippers and most targets, done as a punishment to the player when the machine is nudged too violently or frequently. 

  • To play worse than usual (often as a result of previous bad luck or losses). 

  • To charge (at someone) with a lance. 

  • To forge (something) with a tilt hammer. 

  • To be at an angle. 

  • To point or thrust a weapon at. 

  • To cover with a tilt, or awning. 

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