Scomberesox vs fish genus

Scomberesox and fish genus both are nouns.

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

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

Scomberesox (noun)	fish genus (noun)
a genus of Scomberesocidae	any of various genus of fish