Forest type is described as the associations of tree species that have similar ecological requirements. Forest types include hardwood, loblolly-shortleaf, northern hardwood, oak-gum-cypress, oak hickory, and oak-pine, softwoods, etc.

Fluoride are ester of hydrofluoric acid that contains fluorine as one of the two elements (used to prevent tooth decay).

Fluidized-bed combustion is described as a clean coal technology that removes sulfur from coal combustion as well as limiting the formation of nitrogen oxides. It involves suspending crushed coal and limestone in the bottom of a boiler by an upward moving stream of hot air.

Fluid coking describes a thermal cracking process utilizing the fluidized-solids technique to remove carbon (coke) for continuous conversion of heavy, low-grade oils into lighter products.

The term floors decribes a material that covers a floor.

Floating Crane is idenfied as a crane mounted on a Barge or pontoon, which can be towed or is self propelled.

Fender is defined as an appliance made of rubber, timber and/or rope or other materials normally attached to a dock or quay used to prevent damage to the hull of a vessel especially during mooring and un-mooring operations.

Filament is defined as a thin tungsten wire that emits light when heated by an electrical current.