sweeper vs teleostan

sweeper and teleostan both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweeper	Yes	No	No	No
teleostan	Yes	No	No	No

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

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

Other hypernyms of sweeper include teleost, teleost fish.

sweeper (noun)	teleostan (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.)