activeness vs operation

activeness and operation both are nouns.

Word	Noun	Adjective	Verb	Adverb
activeness	Yes	No	No	No
operation	Yes	No	No	No

As nouns, operation is a hyponym of activeness; that is, operation is a word with a more specific, narrower meaning than activeness:

Other hyponyms of activeness include agency, busyness, hum, behavior, behaviour, eructation, eruption, extravasation, overdrive, play, swing.

activeness (noun)	operation (noun)
the trait of being active; moving or acting rapidly and energetically	a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
the state of being active	(mathematics) calculation by mathematical methods
	activity by a military or naval force (as a maneuver or campaign)
	a planned activity involving many people performing various actions
	a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
	a business especially one run on a large scale
	the activity of operating something (a machine or business etc.)
	(psychology) the performance of some composite cognitive activity; an operation that affects mental contents
	(computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)
	process or manner of functioning or operating
	the state of being in effect or being operative