sweeper vs teleost fish

sweeper and teleost fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweeper	Yes	No	No	No
teleost fish	Yes	No	No	No

As nouns, teleost fish is a hypernym of sweeper; that is, teleost fish is a word with a broader meaning than sweeper:

sweeper: little-known nocturnal fish of warm shallow seas with an oblong compressed body
teleost fish: a bony fish of the subclass Teleostei

Other hypernyms of sweeper include teleost, teleostan.

sweeper (noun)	teleost fish (noun)
little-known nocturnal fish of warm shallow seas with an oblong compressed body	a bony fish of the subclass Teleostei
a cleaning implement with revolving brushes that pick up dirt as the implement is pushed over a carpet
an employee who sweeps (floors or streets etc.)