The kanji 障 fundamentally conveys the idea of an "obstacle," "hindrance," or "impediment." It signifies something that blocks, prevents, or obstructs progress, movement, or a process. This obstruction can be physical, like a barrier, or abstract, such as a problem or difficulty. The core meaning focuses on the concept of something getting in the way.

・On-yomi (音読み): ショウ (shou) ・Kun-yomi (訓読み): さわ-る (sawa-ru) - to hinder; to obstruct; to impede.

⚫︎ 故障 (こしょう) Translation: Breakdown; Failure; Trouble. ⚫︎ 障害 (しょうがい) Translation: Obstacle; Impediment; Handicap; Defect; Injury. ⚫︎ 交通の支障 (こうつうのししょう) Translation: Traffic obstruction; disruption of traffic.

The kanji 障 is a 形声文字 (keisei moji), a phono-semantic compound character. It is composed of two parts: the radical 阝 (こざとへん - ko-zato hen) on the left, which signifies a hill or slope, and the phonetic component 章 (しょう - shou) on the right, which provides the sound. The combination of the radical 阝 which implies a barrier or something that blocks the way, with the sound of 章 suggests an obstruction or impediment. Over time, the character evolved to represent the idea of something that hinders or prevents, reflecting the core concept of an obstacle.