genus Sphyrna vs fish genus

genus Sphyrna and fish genus both are nouns.

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

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

genus Sphyrna (noun)	fish genus (noun)
type genus of the Sphyrnidae	any of various genus of fish