Historical Meaning (OED)
The historical core of “safety” is concrete: being safe, preserved, or free from physical danger, injury, or loss.
Entering Middle English in the 14th century via Anglo-French salveté and Latin salvus (“uninjured, in good health”), early uses concerned preserving lives and property from identifiable threats. It yielded practical concepts like safeguards and safety valves, describing actual protection from physical harm rather than immunity from unpleasant ideas.