operate vs fly

operate is not a noun while fly is a noun.

Word	Noun	Adjective	Verb	Adverb
operate	No	No	Yes	No
fly	Yes	Yes	Yes	No

As verbs, fly is a hyponym of operate; that is, fly is a word with a more specific, narrower meaning than operate:

Other hyponyms of operate include synchronise, synchronize, dial, turn, submarine, treadle, relay, gate, pedal, drive, aviate, pilot.

operate (noun)	fly (noun)
	(baseball) a hit that flies up in the air
	two-winged insects characterized by active flight
	an opening in a garment that is closed by a zipper or by buttons concealed under a fold of cloth
	flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent
	fisherman's lure consisting of a fishhook decorated to look like an insect

operate (adjective)	fly (adjective)
	(British informal) not to be deceived or hoodwinked

operate (verb)	fly (verb)
perform surgery on	decrease rapidly and disappear
perform a movement in military or naval tactics in order to secure an advantage in attack or defense	change quickly from one emotional state to another
handle and cause to function	transport by aeroplane
keep engaged	hit a fly
perform as expected when applied	travel through the air; be airborne
direct or control; projects, businesses, etc.	operate an airplane
	move quickly or suddenly
	run away quickly
	travel over (an area of land or sea) in an aircraft
	travel in an airplane
	pass away rapidly
	cause to fly or float
	be dispersed or disseminated
	display in the air or cause to float