safety vs umbrella

safety

noun
  • A safety squeeze. 

  • 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. 

  • 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. 

umbrella

noun
  • Generally, anything that provides protection. 

  • Something that covers a wide range of concepts, purposes, groups, etc. 

  • The main body of a jellyfish, excluding the tentacles. 

  • A cloth-covered frame used for protection against rain or sun. 

  • An umbrella-shaped reflector with a white or silvery inner surface, used to diffuse a nearby light. 

verb
  • To move like a jellyfish. 

  • To cover or protect, as if by an umbrella. 

  • To form the dome shape of an open umbrella. 

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