礎

Phono-semantic compound composed of:

石 — “stone,” indicating material and meaning.

楚 — “the state of Chu,” providing pronunciation and nuance of firmness or structure.

Thus, the character originally denoted a stone foundation or base, literally “a stone like that of Chu.”

基礎 (기초) — foundation, groundwork, basis

礎石 (초석) — foundation stone, cornerstone

立礎 (입초) — to establish a foundation

礎業 (초업) — foundational undertaking, basic enterprise

In Confucian and Daoist thought, 礎 symbolizes stability, endurance, and the unseen support beneath visible achievements — paralleling moral foundations beneath social order.

「國以民爲本，民以食爲天，食以地爲礎。」

“The people are the foundation of a nation, food is the heaven of the people, and the land is their cornerstone.”

The metaphor of 礎 as the “base of virtue or learning” became common in both Chinese and Korean classical texts.