Frames are only called frames in Emacs; outside Emacs, frames are called “Windows”. (But not all of the properties of Emacs frames pertain to non-Emacs “windows” such as your Web browser window or an application dialog box.)
A frame is rectangular, with four frame borders. A frame usually has a title bar with a frame title (name). A frame usually has a MenuBar, just under the title bar. Depending on your version of Emacs, a frame may also have a ToolBar with buttons.
Here is a screenshot showing a frame with three Windows:
The frame space under the menu-bar is tiled into panes called, in Emacs-speak, Windows. Sorry about the confusion :).
A frame can be in one of these states:
A visible frame can be in one of these states:
A raised frame can be maximized, occupying the full screen, or not.
You can resize a frame, drag it around, iconify it, raise (uniconify) it if it is iconified, rename it, or delete it.
Some common frame commands:
C-x 5 o -- other frame C-x 5 0 -- delete frame C-x 5 1 -- delete other frame C-x 5 2 -- make frame C-x C-z -- Iconify Frame