Another term that might not be very useful is safety. I say this in the wake of yesterday's tragic election.
I saw people focus on Facebook on protecting or providing a sense of safety to our students. We cannot do that. We cannot protect them or make them safe. Life has risks. Safety might be defined as the (relative) lack of risk. So you are safer with safety belt in car than without, but you are not safe in any absolute sense, since the car is one of the most dangerous things in existence. Things that are really safe we don't even think of as safe. We don't have a safety watch, for example, because people don't cut themselves with a watch very often. We only have a safety razor, designed to produce fewer cuts than the old-fashioned straight razor. Guns have safeties to prevent them from going off accidentally, but my pencil doesn't have a safety.
Also, I don't know how I can protect my students since I am also unsafe. I cannot prevent them from hearing their uncle say something sexist, or from microaggressions from their fellow students. I can't be at a student party preventing people from unwanted sexual attention.
So there is no safety because we are in a struggle against things that actually are dangerous. The elimination of danger is not an option.
What other words have lost their meaning?