safety vs welfare

safety

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

  • 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. 

  • 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. 

welfare

noun
  • Health, safety, happiness and prosperity; well-being in any respect. 

  • Such payment. 

  • Various forms of financial aid provided by the government to those who are in need of it (often called welfare assistance in UK English). 

verb
  • To provide with welfare or aid. 

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