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.   _{Your Comment}