"Passive (Inactive)" refers to a state where an individual or system is not actively engaged or participating in an activity. In this context, a person may be described as passive if they do not take initiative or respond to stimuli, often remaining on the sidelines rather than taking action. This can apply to various situations, such as in social interactions or during physical activities. In technology, a passive system may refer to devices or components that do not require external energy to operate. For example, a passive solar heating system relies on natural sunlight to maintain temperature without active mechanical systems. This concept is important in both psychology and engineering, highlighting different forms of inactivity.