警報|けいほうkeihou[0]heiban (flat)

1. nounwarning; alarm; alert
   その警報けいほうで皆みな部屋へやから飛び出とびだした。↗

   The alarm sent everyone rushing out of the room.

• Synonym警告けいこくNeutralA warning or admonition given to a person in advance; 「警報」 is a notification or signal telling people to stay on guard.
• Related注意報ちゅういほうWrittenA written/formal term for advisories warning of possible disasters, as in 「大雨注意報」 or 「食中毒注意報」; it signals a lower danger level than 「警報」.
• Related注意ちゅういNeutralPaying attention or giving a reminder; very broad in use, whereas 「警報」 refers specifically to alarms for disasters, security and the like.

Use 「警報」 for disaster and security alarms, as in 「大雨警報」 or 「警報が鳴る」. For a lower alert level pick 「注意報」, for warnings directed at a person 「警告」, and for general reminders 「注意」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 用心ようじんをうながすためのしらせ。