When some application hang or freeze on Windows, usually we do End Task or End Processing through Task Manager.
To quit Application or Task in Apple Mac OSX, using the Force Quit Applications. To launch Force Quit Application;
Method 1
1. Click on Apple on Top Left Menu bar
2. Force Quit
Method 2
1. Invoke Short Cut key Alt/Option + Apple Command + Esc key
Select the application and click Force Quit.