genus Balistes vs fish genus

genus Balistes and fish genus both are nouns.

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

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

genus Balistes (noun)	fish genus (noun)
type genus of the Balistidae	any of various genus of fish