Close(An item on the Connect menu that closes the current window without signing the user out of Communicator); Close button(In Windows-based programs, the box that has an × at the upper-right corner of the screen that, when clicked, closes the window)
dismiss(To reject or turn off a system notification such as a reminder, a new message alert or an alarm); close(To end an application's relationship with an open file so that the application will no longer be able to access the file without opening it again)