Twntyfourteen theme explaination

Hi @tukai,

These files contains template part and are named based on post format though it’s not necessary to name like this but its useful to understand it easily.

Example:
content-[post-format].php
For Audio post format:
content-audio.php

These are called using get_template_part() function in index.php file of the theme based on post format assigned to the post.

You will find more information about it on the following article.

http://www.dummies.com/how-to/content/create-and-use-wordpress-template-parts.html

Cheers,