>>1682138Not sure if this is different south of border but here a 'grill' can refer to the metal framework above a flame and also to the large closed sheet metal cooking surfaces that diners use to make burgers and eggs and things like that.
In the case of barbecue, the word refers to the entire contraption of which the 'grill' is one component. Unless you're talking about the food 'barbecue' which is usually done in a smoker. In any case, BBQ is just shorthand.