The HEAD element is embedded in an HTML document before the BODY. It contains general information about the document.
The BODY element contains the actual document which is to be presented. It is the second part of a HTML document. The first part is the HEAD. It cannot contain the HEAD, nor can it be inside the HEAD. It can only be contained in the HTML element.
The <TITLE> element specifies the document title. The title is composed of plain text only. No other HTML elements are to be in the title. The title element is always contained within the HEAD element. See also <HEAD>.