When I first started, I remember that we had "nodes" such as hashnode.com/n/c , hashnode.com/n/hashnode , and so on. With a few versions later, I am unsure on the naming conventions of several of these concepts on Hashnode.

It was my original understanding that the site was designed & developed to support several different "Nodes" which were similar to communities around specific subjects such as Amazon AWS, Node.js, Angular.js, C, Security, etc...

IIRC the original method to associate one's content with such nodes was applied by tagging the post with the node's name. In the current state of things though, it seems that the concept of a "node" has sort of disappeared and now we have "Categories" of tags, but some tags actually have their own page (such as /n/hashnode) whereas others do not (such as /n/assembly). Now, I see something called "Community channels" which appear to be like nodes were again, but they seem to also be tags.

Can somebody please clear up what the official naming of these various features are, which have been removed/renamed, and so forth?

Thank you!