It appears that ancient Romans were great public relations makers. When they wished to promote a certain understanding, they used to invent a new word (or a new couple of words) and to imprint it onto the public opinion. Examples are: vox populi (= voice of the people), and res publicae (= public affairs), from which we get our term 'republic'.
Today we call this phenomenon 'buzz' or 'buzzwords'.
The very fact of the word existence convinces the public of the necessity of that social phenomenon in real life.