光|ひかりhikari[3]odaka (tail-high)

1. nounlight
   光ひかりが世よにやって来きた。↗

   Light has come into the world.
2. nounillumination; ray; beam; gleam; glow
3. nounhappiness; hope
4. nouninfluence; power
5. nounvision; eyesight
6. nounoptical fiber; optical fibre

• Synonym光線こうせんNeutralA ray or beam of light — the path light travels. An objective term common in physics and description, e.g. 「太陽の光線」; not for light in general.
• Related輝きかがやきNeutralNeutral word for bright radiance; also used figuratively for glory or vitality, as in 「目の輝き」. Highlights the shining quality rather than light in general.
• RelatedきらめきWrittenTwinkling, flickering light; also a flash of brilliance such as 「才能の煌めき」. Written register with a literary, poetic flavor.
• Antonym闇やみNeutralAntonym of 「光」: darkness where no light reaches. Also figuratively for things kept hidden or that cannot be brought into the open.
• Antonym影かげNeutralAntonym of 「光」: the shadow formed where light is blocked — a dark shape or figure, not the absence of light itself.
• Antonym暗黒あんこくWrittenAntonym of 「光」: utter, pitch-black darkness; also a metaphor for a dark age. Written/formal register, heavier than 「闇」.

Default to 「光」 for light in general. Use 「輝き」 for bright radiance, 「煌めき」 for twinkling light, and 「光線」 for objective rays or beams. For darkness choose 「闇」 or the more formal 「暗黒」; for shadows, 「影」.

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

1. （ひかり） 電磁波でんじはで、人ひとの目めに達たっして感覚かんかく（視覚しかく）を生しょうずるもの。おおよそ短波たんぱ長ちょう側がわが360nm～400nm、長波ちょうは長ちょう側がわが760nm～830nmの範囲はんいにある。可視光線かしこうせん。