We call a group of organs that work together to carry out a particular function a system.

For example:

* Digestive system: Breaks down food and absorbs nutrients

* Respiratory system: Takes in oxygen and releases carbon dioxide

* Circulatory system: Transports blood throughout the body

* Nervous system: Controls and coordinates bodily functions

* Musculoskeletal system: Provides support, movement, and protection

Let me know if you'd like more examples!