An HTML Element is an individual component of an HTML document or web page. HTML is composed of a tree of HTML elements and other nodes, such as text nodes. Each element can have HTML attributes specified. Elements can also have content, including other elements and text. Many HTML elements represent semantics, or meaning.
Example: The paragraph element <p></p> is made up of the opening <p> and the closing </p> tags.
About HTML Elements
HTML is a markup language which means that it is written with codes that can be read by a person, without needing to be compiled.
An HTML element is the opening tag that kicks off and tells the browser that everything between that and the closing tag in an HTML document.
For the full list of HTML elements use this index.