Which of the following people came up with the term “hypnosis”?

James Braid. 
He got the term "hypnosis" from Hypnos the Greek God of sleep.

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.