overt operation vs intelligence

overt operation and intelligence both are nouns.

Word	Noun	Adjective	Verb	Adverb
overt operation	Yes	No	No	No
intelligence	Yes	No	No	No

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

Other hypernyms of overt operation include intelligence activity, intelligence operation.

overt operation (noun)	intelligence (noun)
the collection of intelligence openly without concealment	the operation of gathering information about an enemy
	the ability to comprehend; to understand and profit from experience
	information about recent and important events
	secret information about an enemy (or potential enemy)
	a unit responsible for gathering and interpreting information about an enemy