agency
noun
an administrative unit of government
“the Central Intelligence Agency”
“the Census Bureau”
a business or organization that provides a particular service, especially the mediation of transactions between two parties
the state of being in action or exerting power
“the agency of providence”
“she has free agency”
the state of serving as an official and authorized delegate or agent
thing or person that acts to produce a particular effect or achieve an end
“a means of control”
“an example is the best agency of instruction”
Source: WordNet 3.1, Princeton University