公事

work-related matters / documents

public / collectively owned / common / international (e.g. high seas, metric system, calendar) / make public / fair / just / Duke, highest of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4] / honorable (gentlemen) / father-in-law / male (animal)

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

routine business / usual practice / mere formality

to do things in a strictly businesslike manner (idiom)

(Tw) briefcase

office (room or building)