运转 (yùn zhuǎn) has two main uses: (1) for machinery, systems, or organizations to operate or run smoothly – contrast with 经营 (jīng yíng), which specifically means to run a business or enterprise; (2) for celestial bodies or objects to revolve or rotate around an axis – contrast with 旋转 (xuán zhuǎn) 'spin' and 转动 (zhuàn dòng) 'rotate', which are more general terms for rotation.