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security
/sɪˈkjɔːɹəti/
The word evokes a feeling of stability and protection against volatility, whether that volatility is physical danger, social instability, or financial risk. In its emotional sense, it describes the psychological peace that comes from knowing one is safe. This differs from 'safety' in that security often implies a sustained state or a system of protection rather than just the absence of immediate harm. In professional and technical contexts, it refers to the active measures (guards, locks, encryption) used to prevent breach or intrusion. It carries a connotation of vigilance and control. In financial terms, the meaning shifts toward 'guarantee.' Whether as a tradable asset or collateral for a loan, the core image is something that provides a sure foundation or a fallback to mitigate loss.
Uncountable when referring to a general feeling of safety ('a sense of security') or the systems protecting a building ('airport security'). Countable when referring to tradable financial assets like stocks and bonds ('government securities').
意味
The state of being free from danger or threat.
"The new alarm system provides a greater sense of security for the homeowners."
Precautions taken to protect a building, person, or area from unauthorized access or attack.
"Airport security has been tightened following the recent incident."