Reference

Tag Description
<!-- ... --> Defines a comment
<!DOCTYPE> Defines the document type
<a> Defines a hyperlink
<article> Defines an article
<body> Defines the document’s body
<br> Defines a single line break
<button> Defines a clickable button
<code> Defines a piece of computer code
<div> Defines a section in a document
<footer> Defines a footer for a document or section
<h1> to <h6> Defines HTML headings
<head> Defines information about the document
<header> Defines a header for a document or section
<html> Defines the root of an HTML document
<img> Defines an image
<li> Defines a list item
<link> Defines the relationship between a document and an external resource (most used to link to style sheets)
<menu> Defines a list/menu of commands
<nav> Defines navigation links
<ol> Defines an ordered list
<p> Defines a paragraph
<span> Defines a section in a document
<table> Defines a table
<td> Defines a cell in a table
<title> Defines a title for the document
<tr> Defines a row in a table
<ul> Defines an unordered list
<video> Defines a video or movie

source: w3schools

Anatomy of an HTML tag

tag structure

html tag 1

attribute

html tag 2

source: MOOC by JHU