転任
てんにん · tennin · JLPT N1 · noun
post
🧳 転 (turn, change) + 任 (duty, post) = turning your duty over to a new post
転 means turn or change, and 任 means appointed duty or office. Together they describe being moved from one post to another. Say ten-nin, with ten meaning ten.
任 — person radical 亻 + 壬 (phonetic)
任 combines the person radical 亻 with 壬, which supplies the sound. The original sense centered on a person bearing a load or burden, which extended naturally to 'carrying responsibility,' 'duty,' and 'to appoint someone to a post.' Modern uses like 任务 (task) and 责任 (responsibility) preserve this core idea.