What are the standard GUI elements called?

Is there a list of what the standard elements on an Android devices are called? I can use everything just fine, but explaining to others to "use that bar at the top" and "the button that looks like a piece of paper" and so on is a) embarrassing and b) not the easiest way to explain things. Searching for names, I always end up at the GUI-documentation, which is useful in general, but certainly not in this case!