There are many interpretations of the term 'barbecue' in the world.
Some people use it to describe a social gathering and cooking outdoors.
Others use it to describe grilling food. For our purpose here, we are using the term to describe meat, slow-cooked, using wood smoke to add flavor. There is equipment designed just for this type of cooking. Barbecuing is not grilling. Grilling is cooking over direct heat, usually a hot fire for a short time.