Scoop (utensil)
In common usage, a scoop is any specialized spoon used to serve food.
In the technical terms used by the food service industry and in the retail and wholesale food utensil industries, there is a clear distinction between three types of scoop: the disher, which is used to measure a portion e.g. cookie dough, to make melon balls, and often to serve ice cream (although manufacturers frequently advise against using dishers for ice cream and other frozen foods); ice cream scoops, and the scoop which is used to measure or to transfer an unspecified amount of a bulk dry foodstuff such as rice, flour, or sugar.
Dishers are usually hemispherical like an ice cream scoop, while measuring scoops are usually cylindrical, and transfer scoops are usually shovel-shaped. Some dishers have mechanical levers which help expel the disher's contents. Traditionally dishers are sized by the number of scoops per quart but may also be sized by ounces, the diameter of the bowl, or the number of tablespoons they hold.
Some higher-end ice cream scoops have a thermally conductive liquid in the handle to help keep the ice cream from freezing to the scoop's metal.
Transfer scoops (a.k.a. utility scoops) are used to transfer bulk foods from large storage containers to smaller containers, and generally do not have any measurement markings, as their purpose is to transfer, and taking time to adjust the amount in a scoop would slow the transfer rate.
The table below is the standard definition in the food industry, but actual capacity varies by manufacturer.
Transfer scoop
Zerolon Ice cream scoop with heat conductive fluid and a green handle cap, indicating a #16 scoop (Zerolon Scoops use a different color coding, where the size # is the number of double scoop servings in a gallon of ice cream)
Small disher scoop
Large aluminum scoop, here with caramel corn
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