AFISR vs federal agency

AFISR and federal agency both are nouns.

Word	Noun	Adjective	Verb	Adverb
AFISR	Yes	No	No	No
federal agency	Yes	No	No	No

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

AFISR: an agency focused on ensuring that the United States military attains information superiority; operates worldwide ground sites and an array of airborne reconnaissance and surveillance platforms
federal agency: an administrative unit of government

Other hypernyms of AFISR include agency, authority, bureau, government agency, office.

AFISR (noun)	federal agency (noun)
an agency focused on ensuring that the United States military attains information superiority; operates worldwide ground sites and an array of airborne reconnaissance and surveillance platforms	an administrative unit of government