Which term best describes two or more interconnected systems?

The term that best describes two or more interconnected systems is "super system." A super system refers to a larger system that encompasses multiple smaller systems, known as sub-systems. Each of these sub-systems may function independently but are interconnected in a way that they contribute to the overall operation and objectives of the super system. The relationship between the systems can involve communication, cooperation, and functionality, highlighting how they interact and depend on one another.

In contrast, a sub-system refers specifically to a component within a larger system rather than describing multiple interconnected systems. An interface describes the point at which two systems or components interact, but it does not indicate a collective grouping of connected systems. A component is a part of a system but does not necessarily imply interconnectedness like the concept of a super system does. Hence, "super system" accurately captures the idea of multiple interconnected systems working together.