In Dubai the terms are used interchangeably, and the difference that matters is not the label but the scope. F&B is the wider category — restaurants, cafés, bars, cloud kitchens, hotel outlets and catering — and the same development discipline applies across all of it: unit economics first, kitchen and licence realism second, control rhythm third. GGB works across the full category; the method does not change with the format.
From F&B Consultant in Dubai — the full reading, with the method behind this answer.