Tag

In HTML a tag is used for creating an element.  The name of an HTML element is the name used in angle brackets such as <p> for paragraph.  Note that the end tag's name is preceded by a slash character, "</p>", and that in empty elements the end tag is neither required nor allowed. If attributes are not mentioned, default values are used in each case. 

Learn more

General Knowledge

• HTML element on Wikipedia
• HTML Tags on W3

Technical reference

• What are HTML tags & how to use them [en-US]