庫

Phono-semantic compound:

广 (house, shelter radical) - semantic, indicating a building.

車 (cart, vehicle) - phonetic, giving the sound “고.”

The graph depicts a building (广) associated with storage of carts and goods (車), hence “storehouse.”

倉庫 (창고) — warehouse, storehouse

軍庫 (군고) — military arsenal, armory

金庫 (금고) — safe, vault, treasury

書庫 (서고) — archive, library stack

寶庫 (보고) — treasure house, repository

In premodern East Asia, 庫 referred broadly to official storage places: grain stores, weapon depots, or treasuries.

In modern usage, especially in Chinese, 庫 has been extended metaphorically to mean “repository” or “database” (e.g., 資料庫 = database).