Alectis vs fish genus

Alectis and fish genus both are nouns.

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

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

Alectis: a genus of Carangidae, containing the threadfish or diamond trevallies (Alectis)
fish genus: any of various genus of fish

Alectis (noun)	fish genus (noun)
a genus of Carangidae, containing the threadfish or diamond trevallies (Alectis)	any of various genus of fish