In a US college, if there is an area with some tables and chairs in it but no any shops. Some students and teachers sit there to drink coffee or eat their lunch. Should I call it "dining area" or "cafeteria"? Thank you.
If it's intended use is for dining I might call it a dining area. But if people just happen to use it for that because they want to, I might call it a patio, seating area, terrace, or whatever best describes it.