Sula bassana vs gannet

Sula bassana and gannet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sula bassana	Yes	No	No	No
gannet	Yes	No	No	No

As nouns, gannet is a hypernym of Sula bassana; that is, gannet is a word with a broader meaning than Sula bassana:

Sula bassana: very large white gannet with black wing tips
gannet: large heavily built seabird with a long stout bill noted for its plunging dives for fish

Sula bassana (noun)	gannet (noun)
very large white gannet with black wing tips	large heavily built seabird with a long stout bill noted for its plunging dives for fish