strike vs sleeper

strike and sleeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
strike	Yes	No	Yes	No
sleeper	Yes	No	No	No

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

Other hyponyms of strike include blockbuster, megahit, smash hit.

strike (noun)	sleeper (noun)
a group's refusal to work in protest against low pay or bad work conditions	an unexpected hit
a score in tenpins: knocking down all ten with the first ball	tropical fish that resembles a goby and rests quietly on the bottom in shallow water
an attack that is intended to seize or inflict damage on or destroy an objective	a passenger car that has berths for sleeping
a conspicuous success	one of the cross braces that support the rails on a railway track
(baseball) a pitch that the batter swings at and misses, or that the batter hits into foul territory, or that the batter does not swing at but the umpire judges to be in the area over home plate and between the batter's knees and shoulders	a piece of furniture that can be opened up into a bed
a gentle blow	pajamas with feet; worn by children
	a rester who is sleeping
	an unexpected achiever of success
	a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal

strike (verb)	sleeper (verb)
cause to form (an electric arc) between electrodes of an arc lamp
arrive at after reckoning, deliberating, and weighing
indicate (a certain time) by striking
make a strategic, offensive, assault against an enemy, opponent, or a target
deliver a sharp blow, as with the hand, fist, or weapon
hit against; come into sudden contact with
affect or afflict suddenly, usually adversely
produce by manipulating keys or strings of musical instruments
remove by erasing or crossing out or as if by drawing a line
pierce with force
smooth with a strickle
hook by a pull on the line
produce by ignition or a blow
form by stamping, punching, or printing
disassemble a temporary structure, such as a tent or a theatrical set
have an emotional or cognitive impact upon
drive something violently into a location
occupy or take on
cause to experience suddenly
find unexpectedly
stop work in order to press demands
attain
touch or seem as if touching visually or audibly