Beginners often get confused between HTML elements, nested elements, and tags. Let's clarify the difference by understanding each one step-by-step.

What is HTML Element

An HTML element is a component of an HTML document that defines the structure and content of a web page. Each element is enclosed within angle brackets <...> and consists of a start tag, content, and an end tag.
HTML Element = Start Tag + Content + End Tag

For example:

<h1>This is our first heading</h1>

In this example, <h1> is the start tag, "This is our first heading" is the content, and </h1> is the end tag. Together, they form an HTML element.

What is a Nested HTML Element

When one HTML element is placed inside another element, it is called a nested element. Nested elements help in organizing and structuring the content of a web page.
Nested HTML Element = One HTML Element Inside Another HTML Element

For example:

<h1>
  <p>This is a nested Paragraph</p>
  <span>This is a nested element</span>
</h1>

In this example, <p> and <span> are nested elements inside the <h1> element.

What is an Empty HTML Element

An empty HTML element is an element that does not have any content between the start and end tags. These elements are self-closing and do not require an end tag.
Empty HTML Element = Tags with No Content

For example:

<br />

This is a break tag, which has no content and no closing tag. It's used to insert a line break within text or other inline elements. The <hr /> tag, used for horizontal rules, is another example of an empty or void element.

HTML Tags vs. Elements

HTML Tags

HTML tags are the markers that define the start and end of an element. They are wrapped in angle brackets, like <p> and </p>.

HTML Elements

An HTML element includes an opening tag, content, and a closing tag, forming a complete set. For example, <p> This is a paragraph </p>.

Conclusion

• Tags set boundaries; elements include tags plus content.
• Tags come in pairs (most of the time), whereas elements may include nested elements.
• Self-closing or void elements like <br /> are still considered elements, even though they don't have a closing tag or content.
• Elements can be "parent" or "child" when nested, but tags cannot.