genus Scomberesox vs fish genus

genus Scomberesox and fish genus both are nouns.

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

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

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