space agency vs agency

space agency and agency both are nouns.

Word	Noun	Adjective	Verb	Adverb
space agency	Yes	No	No	No
agency	Yes	No	No	No

As nouns, agency is a hypernym of space agency; that is, agency is a word with a broader meaning than space agency:

Other hypernyms of space agency include authority, bureau, federal agency, government agency, office.

space agency (noun)	agency (noun)
an organization dedicated to the exploration of space.	to have the ability to produce a particular effect or achieve an end
	an administrative unit of government
	a business or organization that provides a particular service, especially the mediation of transactions between two parties
	the state of serving as an official and authorized delegate or agent
	the state of being in action or exerting power