genus Mola vs fish genus

genus Mola and fish genus both are nouns.

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

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

genus Mola (noun)	fish genus (noun)
type genus of the Molidae	any of various genus of fish