Poronotus vs fish genus

Poronotus and fish genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Poronotus	Yes	No	No	No
fish genus	Yes	No	No	No

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

Poronotus (noun)	fish genus (noun)
a genus of Stromateidae	any of various genus of fish