hazard vs safety

hazard

noun
  • The act of potting a ball, whether the object ball (winning hazard) or the player's ball (losing hazard). 

  • An obstacle or other feature which causes risk or danger; originally in sports, and now applied more generally. 

  • A problem with the instruction pipeline in CPU microarchitectures when the next instruction cannot execute in the following clock cycle, potentially leading to incorrect results. 

  • A game of chance played with dice, usually for monetary stakes; popular mainly from 14th c. to 19th c. 

  • Chance. 

  • An obstacle or other feature that presents a risk or danger that justifies the driver in taking action to avoid it. 

  • The side of the court into which the ball is served. 

  • The chance of suffering harm; danger, peril, risk of loss. 

  • A sand or water obstacle on a golf course. 

verb
  • To expose to chance; to take a risk. 

  • To risk (something); to venture, incur, or bring on. 

safety

noun
  • An instance of a player being sacked or tackled in the end zone, or stepping out of the end zone and off the field, resulting in two points to the opposite team. 

  • A mechanism on a weapon or dangerous equipment designed to prevent accidental firing. 

  • The condition or feeling of being safe; security; certainty. 

  • Any of the defensive players who are in position furthest from the line of scrimmage and whose responsibility is to defend against passes as well as to be the tacklers of last resort. 

  • A safety squeeze. 

  • Preservation from escape; close custody. 

verb
  • to secure a firing pin, as in guns, to keep the gun from firing 

  • To secure (a mechanical component, as in aviation) to keep it from becoming detached even under vibration. 

How often have the words hazard and safety occurred in a corpus of books? (source: Google Ngram Viewer )