Is there any correct way to name the content element in the "section" tag?

I have sections with headings and i need to wrap the content of the sections into something.

Particularly in my case because the content elements are surrounded by one single border.

But also generally, is there no correct way to name that one big content element? Will I really just have to use the "div" and settle with that?

Also, the the same question for the "article" tag...