A "Stage" or "Phase" refers to a distinct period in a process or development. It often indicates a specific set of characteristics or activities that occur during that time. For example, in the context of project management, different stages help organize tasks and track progress, such as planning, execution, and closure. In biology, stages can describe the life cycle of an organism, such as the larval, pupal, and adult stages of an insect. Each phase has unique features and functions, contributing to the overall growth and development of the organism. Understanding these stages is crucial for studying various processes across different fields.