旋转
xuánzhuǎn · HSK 6
revolve
🌀 旋 revolve + 转 turn = double rotation, spin on spin
Both halves already mean to turn on their own. Doubling them intensifies into continuous spinning — like saying turn-turn to stress nonstop circular motion.
转 — car radical 车 + 专 (phonetic)
转 is a semantic-phonetic compound. The left side 车 (cart/wheel) gives the meaning, evoking something that turns or rotates like a wheel. The right side 专 supplies the sound. Originally referring to the turning of a cart's wheels, it broadened to mean 'turn,' 'rotate,' or 'shift' in general.