<!DOCTYPE>: Defines the document type
<html>: Defines an HTML document
<title>: Defines a title of the document
<body>: Defines the document's body
<h1> to <h6>: Defines HTML headings
<p>: Defines a paragraph
<br>: Inserts a single line break
<abbr>: Defines an abbreviation or an acronym
<address>: Defines contact information for the author/owner of a document/article
<blockquote>: Defines a section that is quoted from another source
<cite>: Defines the title of a work
<em>: Defines emphasized text / 주관적으로 강조
<strong>: Defines important text / 객관적으로 누구나 중요하다고 생각되는 내용
<ul>: Defines an unordered list
<ol>: Defines an ordered list
<li>: Defines a list item
<dl>: Defines a description list
<dt>: Defines a term/name in a description list
<dd>: Defines a description of a term/name in a description list
<div>: Defines a section in a document
<span>: Defines a section in a document
<header>: Defines a header for a document or section
<footer>: Defines a footer a document or section
<main>: Specifies the main content of a document
<section>: Defines a section in a document
<article>: Defines an article
<nav>: Defines navigation links
<aside>: Defines content aside from the page content