The kanji character 硬 generally conveys the meaning of "hard," "stiff," "firm," or "solid." It refers to something that resists deformation, pressure, or impact. This can apply to physical objects or, metaphorically, to aspects like a person's character or a situation's resolve.

・On-yomi (音読み): コウ (kō) ・Kun-yomi (訓読み): かた(い) (katai)

⚫︎ 硬いパン (katai pan) Translation: Hard bread ⚫︎ 硬貨 (kōka) Translation: Coin; currency ⚫︎ 硬直 (kōchoku) Translation: Stiffness; rigidity; to stiffen

The kanji 硬 is a phono-semantic compound. It is composed of two parts: the radical 石 (ishi), meaning "stone" or "rock," and the phonetic component 更 (kō), which provides the sound and hints at an additional meaning. The radical 石 provides the semantic element, indicating a connection to something solid or related to stone. The phonetic component 更 originally meant "to change" or "further," but in combination with 石, it lends the sound コウ (kō) and contributes the idea of something being unchanging, solid, or not easily changed, thus reinforcing the meaning of "hard." The overall structure reflects the concept of something that has the properties of stone - being firm and resistant to change.