脅威

1. Origins, structure, and basic meaning

• Structure: Written 脅威 and read きょうい, it is a person, thing, or situation capable of causing serious harm to safety or survival.
• Basic usage: It describes an invasive insect endangering plants and is denied as a label for everything unknown.

2. Common pitfalls and similar expressions

• Unknown does not automatically mean threatening
  • A threat requires a plausible capacity for harm, not unfamiliarity alone.