検事
けんじ · kenji · JLPT N1 · noun
prosecutor
⚖️ 検 = examine, 事 = case: a prosecutor examines the case for the state
The 検 in 検事 also appears in 検査 (inspection) and 検討 (examination), both about looking closely at something. 事 means matter or case.
事 — hand 又 holding a banner/tablet on a pole
Originally a pictograph of a hand (又) grasping a pole or ceremonial banner used by an official, depicting the act of conducting court business. From this it came to mean 'affair, matter, business, service.' It shares an ancient origin with 史 (scribe) and 吏 (official).