Galeorhinus vs fish genus

Galeorhinus and fish genus both are nouns.

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

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

Galeorhinus (noun)	fish genus (noun)
a genus of Carcharhinidae	any of various genus of fish