How to say "lightning" in Japanese
- 雷かみなりnounThe general word for the phenomenon, covering the flash, the bolt, and the thunder as well; the natural choice when speaking of a storm, though for the flash alone 稲妻 is more precise.
- 稲妻いなずまnounThe flash of lightning itself — the streak of light across the sky — as opposed to the thunder; choose it when you want to describe the bolt rather than the storm as a whole.
- 電光でんこうnounLightning as light: the characters combine 'electricity' and 'light'. Unlike 雷 it does not cover the thunder, so it points purely to the flash of light.
Use 雷 for the phenomenon as a whole, thunder included; 稲妻 for the flash or bolt itself; 電光 for lightning viewed strictly as a flash of light.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
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