The word 'barbecue' is often used to refer to a casual party, usually outdoors or with an outdoor theme and usually with food that has been barbecued or grilled. For this reason many people consider any outdoor cooking, including grilling, as barbecue, which is frowned upon by purists. The device used for cooking barbecue can usually be used for both barbecuing and grilling and is often called a 'Barbecue grill', thereby adding to the confusion. This method of cooking breaks down the collagen in meat and turns tougher cuts into easy eating.