For me, the best description I've been given comes down to the way that they are baked: Cookies - Starts from a ball or blob, which spreads into a flattened sh

For me, the best description I've been given comes down to the way that they are baked: Cookies - Starts from a ball or blob, which spreads into a flattened shape during baking. Biscuits - Starts from a shape cut from a flat rolled sheet, that mostly retains its shape during cooking.