Summary
In HTML a tag is used for creating an element.
In Depth
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.
Know More
What are HTML tags & how to use them [en-US]