NOC vs intelligence officer

NOC and intelligence officer both are nouns.

Word	Noun	Adjective	Verb	Adverb
NOC	Yes	No	No	No
intelligence officer	Yes	No	No	No

As nouns, intelligence officer is a hypernym of NOC; that is, intelligence officer is a word with a broader meaning than NOC:

NOC: an undercover agent who is given no official cover
intelligence officer: a person secretly employed in espionage for a government

Other hypernyms of NOC include intelligence agent, operative, secret agent.

NOC (noun)	intelligence officer (noun)
an undercover agent who is given no official cover	a person secretly employed in espionage for a government