警備

1. Origins, structure, and basic meaning

• Structure: 警備 is read as けいび and can mean “security” or “guarding”, depending on context.
• Basic usage: The examples show staff guarding a venue and added lighting strengthening nighttime security.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is guarding people or premises against accidents or intrusion, with security as its purpose rather than simple guidance.