Deutsch: Wald / Español: Bosque / Português: Floresta / Français: Forét / Italiano: Foresta
A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending on various cultural definitions, what is considered a forest may vary significantly in size and have different classifications according to how and of what the forest is composed. A forest is usually an area filled with trees but any tall densely packed area of vegetation may be considered a forest, even underwater vegetation such as kelp forests, or non-vegetation such as fungi, and bacteria.

In an industrial context, 'fish' typically refers to aquatic organisms that are harvested, processed, and sold for use in various industries, including food and beverage, pharmaceuticals, cosmetics, and fertilizers.

Deutsch: Reibung / Español: Fricción / Português: Atrito / Français: Frottement / Italiano: Attrito

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Deutsch: Faktor / Español: Factor - Factor / Français: Facteur - Facteur / Italiano: Fattori - Fattori

A factor, a Latin word meaning may refer to a sun protection factor, a unit describing reduction in transmitted ultraviolet light and in technology a profession that focuses on how people interact with products, tools, or procedures.

Deutsch: Fuse / Español: FUSE / Français: Fuse

In an industrial or manufacturing context, "fuse" refers to a safety device that is used to protect electrical systems from damage due to overloading or short-circuiting. A fuse works by breaking an electrical circuit if the current flowing through the circuit exceeds a specified limit, thus preventing damage to the electrical components.

Deutsch: Fitting
Fitting can refer to a dress fitting. or any machine component, piping or tubing part that can attach or connect two or more larger parts. For examples, see coupling, compression fitting, piping and plumbing fittings and pipe fitting.

In the industrial and industry context, a fixture refers to a device or piece of equipment that is used to securely hold, support, or position a workpiece during manufacturing processes such as machining, assembly, or inspection. Fixtures are designed to hold the workpiece in a specific position and orientation, allowing for consistent and accurate processing.

Deutsch: Frequenz / Español: Frecuencia / Português: Frequéncia / Français: Frêquence / Italiano: Frequenza
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency.