Farm is characterized as an area of land and its facilities that are maintained and utilized for agricultural purposes.

Formaldehyde, also known as formalin, formal, and methyl aldehyde, is a colorless liquid or gas with a pungent odor.

Food Crops Grown Under Cover - this industry comprises establishments primarily engaged in growing food crops (e.g., fruits, melons, tomatoes) under glass or protective cover.

Fishing this industry comprises establishments primarily engaged in the commercial catching or taking of finfish, shellfish, or miscellaneous marine products from a natural habitat, such as the catching of bluefish, eels, salmon, tuna, clams, crabs, lobsters, mussels, oysters, shrimp, frogs, sea urchins, and turtles.

The furnace is the most important component of a central heating system.

Forage is a term used to refer to: (a) browse and herbage which is available and may provide food for grazing animals or be harvested for feeding. cf. concentrate feed; and (b) to search for or consume forage. This term is synomymous to "graze"

Flash heater refers to a device for heating honey very rapidly to prevent it from being damaged by sustained periods of high temperature.

Fermenter is described as the vessel in which the process of mash fermentation takes place. The vessel may be fabricated from steel, fiberglass, etc., and is normally fitted with an internal or external cooling system for controlling the temperature of the fermenting mash.