Grills have grates, when griddles attribute a flat cooking area. Anything cooked on grills can also be cooked on griddles, but not vice versa. One example is, you can’t Cook dinner omelets, eggs, or pancakes because of the lifted ridges on grills. Griddles will often be sold as commercial grill https://www.cindersbarbecues.co.uk/cinders/get-your-grill-ready-for-national-taco-day/