According to the w3c section is a much broader

, According to the W3C, <section> is a much broader element, while
the <article> element is to be used for blocks of content that could
potentially be read or consumed independently of the other content
on the page.

18
Sections versus DIVs
, The WHATWG specification warns readers that the <section>
element is not a generic container element. HTML already has the
<div> element for such uses.
, When an element is needed only for styling purposes or as a
convenience for scripting, it makes sense to use the <div> element
instead.
, Another way to help you decide whether or not to use the <section>
element is to ask yourself if it is appropriate for the element's
contents to be listed explicitly in the document's outline.
, If so, then use a <section>; otherwise use a <div>.
Figure and Figure Captions
, The W3C Recommendation indicates that the <figure> element can
be used not just for images but for any type of essential content that
could be moved to a different location in the page or document and
the rest of the document would still make sense.
Figure and Figure Captions
, The <figure> element should not be used to wrap every image.
, For instance, it makes no sense to wrap the site logo or non-essential
images such as banner ads and graphical embellishments within
<figure> elements.
, Instead, only use the <figure> element for circumstances where the
image (or other content) has a caption and where the figure is
essential to the content but its position on the page is relatively
unimportant.
Figure and Figure Captions

19
Aside
, The <aside> element is similar to the <figure> element in that it is
used for marking up content that is separate from the main content
on the page.
, But while the <figure> element was used to indicate important
information whose location on the page is somewhat unimportant,
the <aside> element “represents a section of a page that consists of
content that is tangentially related to the content around the aside
element.”
, The <aside> element could thus be used for sidebars, pull quotes,
groups of advertising images, or any other grouping of non-essential
elements.
HTML 5.1
, Quest to define new HTML elements continues
, Often standardize common ways in which content authors combine
existing markup with JavaScript
– <summary> and <detail>
– <dialog>
– <menu> and <menuitem>
, Support by browsers at best partial
– Challenge for content authors