Here are some examples of how it is used:
* Ergonomics: The study of how people interact with their work environment.
* Ergotherapy: Occupational therapy.
* Ergometer: A device used to measure work output.
* Ergostat: A device used to maintain a constant work output.
It is important to note that the combining form -erg is often used in conjunction with other combining forms to create more specific terms. For example, the term cardioergometer refers to a device used to measure the work output of the heart.