Simplified:

On the HSK 3 vocabulary list, at CEFR level B1.

zhuǎn ㄓㄨㄢˇ

    • to turn
    • to change direction
    • to transfer
    • to forward (mail)
    • to share (sb else's content)

      Internet

zhuàn ㄓㄨㄢˋ

    • to revolve
    • to turn
    • to circle about
    • to walk about
    • classifier for revolutions (per minute etc): revs, rpm
    • classifier for repeated actions

Where 轉 is used

Sources