Photoshop work area consists of Application Bar, Tools Panel, Options Bar, Document Window and Panel Dock.
★ Application Bar:
It contains menu bar along with many controls to zoom, buttons for viewing extras.
★ Tools Panel:
It contains a set of tools for selecting, manipulating images.
★ Options Bar:
There are various options available.
★ Document Window:
It displays the current working file.
★ Panel Dock:
Panel dock has several panels to edit/modify the images. By default there are layer, adjustment and style panels.