Fabrication is the process of constructing products by combining typically standardised parts using one or more individual processes.

The system of pipes, tanks, fittings, and other apparatus required for the water supply, heating, and sanitation in a building.

The work of checking, repairing and servicing machinery, equipment, systems and infrastructures.

The work of extinguishing or preventing the spread of unwanted fires from threatening human lives and destroying property and the environment.