Speaking of the meaning of words shifting, how about "Senate"?

The word "Senate" today, at least in the U.S., reflects a body of elected officials. This word and form was deliberately chosen by the founders on the example of the Roman Senate, which ruled while Rome was a Republic and "advised" for centuries while it was an empire.

But the Roman Senate was an aristocratic institution - seats were initially held only by patricians, the ruling class of Rome.

Watching "#Gladiator" or any other modern movie about Roman emperors, there is often a plotline of "restoring the Republic", which feels like a development towards a more just society. But it really it represents a shifting of power from a monarch to a representative body of the ruling class.

Then again, in the United States, Senators tend to be wealthy and privileged, and the institution's claim to represent the nation is, shall we say, dubious.