主導
しゅどう · shudou · JLPT N1 · noun
leadership
👑 主 = main + 導 = guide, so 主導 = main guiding, i.e. main leadership
主 means master or main, and 導 means to lead or guide. Together they name the main leading role, the one who steers the group.
主 — flame/lamp on top of a stand 王
Originally a pictograph of a lamp with a flame on top of its stand, representing the lord or master of the household who tended the fire. The meaning extended from 'lamp/host' to 'master, owner, main, principal'. The character 炷 (wick) preserves the original 'lamp' sense.