A farm, also called an agricultural holding, is an area of land that is devoted primarily to agricultural processes with the primary objective of producing food and other crops, and it is the basic facility in food production. The cited article says the name is used for specialized units such as arable farms, vegetable farms, fruit farms, dairy, pig and poultry farms, and land used for natural fiber and biofuel, and that a farm includes the farmhouse and agricultural buildings as well as the land. It covers ranches, feedlots, orchards, plantations and estates, smallholdings and hobby farms. Buildings recorded in the atlas as farms are grouped under this concept.