<div> and <iframe> are both HTML elements, but they are used for different purposes.
A <div> element is a container for HTML elements, which can be used to group elements together and apply styles to them. A <div> is a block-level element, which means that it takes up the full width of its parent container and creates a new line after it. It can be used to create a layout structure for a webpage.
An <iframe> element, on the other hand, is used to embed another HTML document within the current document. It is used to embed external content, such as a video, a map, or another webpage, within the current webpage. An <iframe> is an inline element, which means that it only takes up as much width as its content needs and does not create a new line after it.
In summary, a <div> is used for layout and structure, while an <iframe> is used to embed external content.