is a specific kind of: administrative body, administrative unit.

is a broader term that covers: executive agency | FDA, Food and Drug Administration | CDC, Center for Disease Control and Prevention | Counterterrorist Center, CTC | Nonproliferation Center, NPC | Bureau of the Census, Census Bureau | National Oceanic and Atmospheric Administration, NOAA | National Climatic Data Center, NCDC | National Weather Service | Technology Administration | National Institute of Standards and Technology, NIST | National Technical Information Service, NTIS | DARPA, Defense Advanced Research Projects Agency | Department of Defense Laboratory System, LABLINK | Department of Energy Intelligence, DOEI | PHS, United States Public Health Service | National Institutes of Health, NIH | BJA, Bureau of Justice Assistance | BJS, Bureau of Justice Statistics | Immigration and Naturalization Service, INS | United States Border Patrol, US Border Patrol | Bureau of Diplomatic Security, DS | Foreign Service | Bureau of Intelligence and Research, INR | FWS, United States Fish and Wildlife Service, US Fish and Wildlife Service | National Park Service | Financial Management Service | Office of Intelligence Support, OIS | Comptroller of the Currency | Bureau of Customs, Customs Bureau, Customs Service, USCB | Bureau of Engraving and Printing | Internal Revenue Service, IRS | FAA, Federal Aviation Administration | Transportation Security Administration, TSA | GAO, Government Accounting Office, United States Government Accounting Office | Navy, United States Navy, US Navy, USN | U. S. Coast Guard, United States Coast Guard, US Coast Guard | Naval Air Warfare Center Weapons Division, NAWCWPNS | Naval Special Warfare, NSW | Naval Surface Warfare Center, NSWC | Naval Underwater Warfare Center, NUWC | Office of Naval Intelligence, ONI | Marine Corps Intelligence Activity, MCIA | Air Force, U. S. Air Force, United States Air Force, US Air Force, USAF | AFISR, Air Force Intelligence Surveillance and Reconnaissance, Air Force ISR | independent agency | Advanced Research and Development Activity, ARDA | Defense Logistics Agency | Defense Reutilization and Marketing Service, DRMS | Defense Technical Information Center, DTIC | law enforcement agency | Occupational Safety and Health Administration, OSHA | organ | Patent and Trademark Office Database, Patent Office | Government Printing Office, GPO, United States Government Printing Office, US Government Printing Office | National Guard Bureau, NGB | Army, U. S. Army, United States Army, US Army, USA | AI, Army Intelligence | Ballistic Missile Defense Organization, BMDO | Defense Information Systems Agency, DISA | National Geospatial-Intelligence Agency, NGA | Casualty Care Research Center, CCRC | Federal Housing Administration, FHA | local authority ... show more.

instances of which are: AFRL, Air Force Research Laboratory | AHPCRC, Army High Performance Computing Research Center | Naval Research Laboratory, NRL | U.S. Army Criminal Investigation Laboratory, United States Army Criminal Investigation Laboratory, US Army Criminal Investigation Laboratory, USACIL.

derivation: official.