What's the difference between i.e. and e.g.?
late 14c., title of an official in ancient Rome, from Latin tribunus "magistrate" (specifically one of the officers appointed to protect the rights and interests of the plebeians from the patricians), originally "head of a tribe," from tribus (see tribe). The meaning "raised platform" is 1762, from Italian, from Latin tribunal "platform for the seats of magistrates in ancient Rome."