The Google Play Store allows you to download and purchase Android apps, as well as music, movies, TV shows, e-books and magazines, and some Android devices and accessories.
The Chrome Web Store allows you to download and purchase apps, extensions and themes for your Google Chrome browser (or Chrome OS device).
Here are some of not-free Chrome extensions
I'm not finding any apps that have an initial charge either. I am finding apps that require you to pay money in order to use them, but just not install them. Netflix, for example. You can install the app for nothing... the service is just useless without an account. FreeMovies.com is another one. The Chrome app costs nothing. However, in order to ...
Div from Google has posted an update on the Google Products Forum:
Thanks so much for your reports -- we definitely want you to get to publishing! We've been working with the team here and it looks like a fix is on its way (hurray). No exact timeline, but it should be here soon.
More from me if I receive any updates. Thanks again ...
The first one is an extension, but the second one is an application (The reviews tab says "Rate this extension" or "Rate this application").
Extensions can appear in the extension bar.
Apps can appear on the apps screen.
Only Google can say for sure, but it seems to me that it is likely there were two different extensions originally, and they've been able to merge the codebases. Perhaps one had been originally for Chromebooks and the other for Chrome on other OSes.
And, while they've been able to make them identical, some people will have one installed and some the other. ...
Google is phasing out the use of Chrome Apps. They've likely removed them from the storefront to prevent new users from beginning to rely on apps that will be completely unsupported later this year. To learn more about this, you can read this Chromium Blog post about it.
Information on the app packs can be found at Google's Support Page.
App packs are packages of apps that an admin can install for its users. Here are the details from the page on the pre-installed app-packs:
You can pre-install apps on your users' managed Chrome devices so that they see the apps from their apps list when they're signed in to their Chrome ...
There's little difference between "installing" these applications in Chrome, and adding them as bookmarks. You do get a nice view of them from the "blank tab" screen, though.
Some applications also add buttons to Chrome's interface. That does not seem to be the case with any of the Google Apps Chrome Apps, but they may be added in the future.