• 日光にっこう — sunlight / Nikko (city)
• 光線こうせん — ray of light / beam
• 観光かんこう — sightseeing
• 光年こうねん — light-year
• 光速こうそく — speed of light
• 光景こうけい — scene / spectacle

光 combines fire (⽕) and 儿 (legs), evoking the image of light spreading or radiating outward. It represents both physical and metaphorical illumination — from sunlight to inspiration.

You’ll see it often in terms like 光速 (speed of light) and 観光 (sightseeing).

日光にっこうが部屋へやに差さし込こんできた。
Sunlight streamed into the room.

彼かれの笑顔えがおは 光ひかりのように明あかるかった。
His smile was as bright as light.

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