Safety
Safety is not a person, place or thing, but it is an idea which makes it a noun.
Look at these sentences where “safety” functions as the subject of a sentence.
Safety is number one.
Safety is everyone’s responsibility.
These are very common sayings you will hear in most workplaces to reinforce the idea that the well being of the worker is more important than anything.
If you have any questions leave a comment or send me an email at doug@English-With-Doug.com.