HTML AND ITS DIFFERENT TAGS

<video>

Embed videos, HTML5, src, <source>.

<track>

Subtitles, time-based, media element, closed captions.

<time>

Datetime, machine-readable, human-readable.

<tfoot>

Table summary, columns, descendant <table>, before <tbody> or <tr>.

<tbody>

Table body, rows, after <thead>.

<summary>

Content summary, <details>, not browser-supported.

<source>

Media resources, cross-browser, <picture>, <audio>, <video>.

<section>

Structural, group elements, related content.

<ruby>

Asian languages, pronunciation, <rt>, <rp>.

<rt>

Pronunciation, ruby, annotation.

<rp>

Fallback, browsers, ruby annotations.

<q>

Inline quotes, no paragraph breaks.

<progress>

Progress bar, max, value, visual task completion.

<output>

Calculation result, <form>, JavaScript.

<optgroup>

Group <option> elements, dropdown <select>.