綠

A phono-semantic compound:

糸 (“fine thread, silk”) — semantic element, indicating color or textile dyeing.

彔 (rok/lù, “to engrave, carve”) — phonetic element, providing the sound.

Originally conveyed the sense of freshness, sheen, or glossiness, later specialized to mean the color green.

綠色 (녹색) — green color

草綠 (초록) — grass-green

綠地 (녹지) — green space, parkland

綠燈 (녹등) — green light (traffic signal)

綠茶 (녹차) — green tea

綠鬢紅顏 (녹빈홍안) — glossy sideburns and rosy face (idiom for youthful beauty)

Both 靑 (청) and 綠 (녹/록) can mean “blue/green” in a broad sense.

When contrasted: 靑 = blue, 綠 = green.

In Korean, besides “green,” 綠 can also denote the patina of oxidized metals.