This does not match my understanding of PARA as described by Tiago. [0] These are not a straight-line "flat" nesting, there's some branches. Areas are at the top, they represent responsibilities, have a broad scope, and undefined/unknowable end date. Both Projects and Resources are nested under an Area. Resources are tools or provisions or information that are potentially useful to fulfill the Area's responsibility. Projects are an attempt to take a little bite out of the Area's responsibility by considering a particular goal in a narrow time horizon. You should be able to use the Area's Resources to help complete a Project.
Archives are the category that is not like the others. It's more of a "completed" / "abandoned" status that can be applied to any of the other three as a way to sift out things that are no longer immediately relevant without deleting them. I like to think of this as a generic, orthogonal Time dimension. Maybe infogulch's version would be called PAR/T.
[0]: I found the Building a Second Brain podcast does a pretty good job of outlining these categories more clearly. Episodes are short ~8m and digestible. https://fortelabs.co/blog/basbpodcast