速

Phono-semantic compound:

辵 (착, walk, movement) – semantic component, related to walking, traveling.

束 (속, to bind, bundle) – phonetic component, providing the sound sok.

Common in modern compounds about speed, urgency, and efficiency.

快速 (쾌속) — high speed, rapid

加速 (가속) — to accelerate

減速 (감속) — to decelerate

速達 (속달) — express delivery

速戰速決 (속전속결) — “fight a quick battle and settle it quickly” (decisive resolution)

The graph ties the idea of “walking (辵)” with “binding (束),” suggesting the notion of “gathering speed” or “compressed motion.”