Etropus vs fish genus

Etropus and fish genus both are nouns.

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

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

Etropus: a genus of Bothidae, containing the large-tooth flounders native to the coastal waters of the Americas (Etropus)
fish genus: any of various genus of fish

Etropus (noun)	fish genus (noun)
a genus of Bothidae, containing the large-tooth flounders native to the coastal waters of the Americas (Etropus)	any of various genus of fish