Difference between container and empty tag in tabular format in HTML

The difference between a container tag and an empty tag is quite simple. a conatiner tag is the one which has to be closed and an empty tag doesnt need to be closed. for example: CONTAINER TAG <html> is the opening tag </html> is the closing tag <a href=""> is the opening tag </a> is the closing tag (closing is required) EMPTY TAG <img src=""> <br> (no closing required)