NIMS establishes common terminology that allows different organizations to work together in a wide variety of emergency functions and hazard scenarios.

Common terminology helps by reducing confusion and enhancing interoperability.

This common terminology covers:

• Organizational Functions: Major functions and units are named and defined using standardized terms
• Resource Descriptions: Resources (personnel, equipment, teams, and facilities) have common naming based on their type and capabilities
• Incident Facilities: Facilities in an incident area are designated using common terms