noun
agency
AY-jun-see/ˈeɪdʒənsi/
An organization charged with providing a particular service.
A travel agency arranges our flights and hotel reservations.

Etymology
The root meaning “do” underlies agency’s earlier sense of active operation. The word later named an establishment doing business for another, connecting action with an organization that provides a service.
In context
the naval service is of course the state's principled sea going agency and continues to undertake a range of security and support tasks
More examples
- The environmental agency monitors the river's water quality.
- Several aid agencies delivered food after the storm.
- An advertising agency designed the company's new campaign.
Forms
agency · agencies
agent noun — A person authorized to act for another.