On the first look, the terms boss and manager are defined clearly. It is written in the English dictionary what the term manager means and the only problem is how to fulfill the role in reality. According to the common definition, a boss is equal to the owner of a business. He has either founded the company by himself, or gets a salary for a manager position, in which he pretends, that it's his business. This strict definition is based on the legal term of ownership, which means, that in capitalist terms any store belongs to somebody who is in charge of running this business.
With this strict definition in the background it can be defined what the obligation of the boss are, and which part of the work can be delegated to other employees which are helping the manager to fulfill the daily business. For example, if the owner of a business has not a single store but he owns 20 of them, it is physical not possible that this person is in all the stores at the same time. He can only be in one of the stores, and in the other stores, he needs somebody as a replacement. This informal manager doesn't owns the store but he is running the daily business in accordance with the real owner.
Is it possible to define the social roles of boss, owner and manager precisely? Why is the manager sometimes different from the owner of a company?