(A)The Toolbar provides access to your Unity Account, Unity Cloud Services, and Unity Collaborate, the play, pause and step controls, and Global Search, a layer visibility menu, and the Editor layout menu (which provides some alternate layouts for the Editor windows, and allows you to save your own custom layouts).
(F)The Inspector Window allows you to view and edit all the properties of the currently selected GameObject. Because different types of GameObjects have different sets of properties, the layout and contents of the Inspector window change each time you select a different GameObject.