Can I publish news or blog articles?

Yes. Open a site in Website Builder, then choose Entries and News. Each post gets its own page, an author, a publish date (set it in the future to schedule), and optional categories and tags. Each post also chooses who can read it (everyone, members, or paid subscribers). Add the News block to any page to list your latest posts automatically.

Every article has a Type. News is the standard feed; the + New Type button above the article list adds another (Press, for example), and picking a type there writes posts of that type. A News block on your site lists one type (News unless you change it in the block's settings), so a new type stays off your pages until you place a block for it.