Naja hannah vs cobra

Naja hannah and cobra both are nouns.

Word	Noun	Adjective	Verb	Adverb
Naja hannah	Yes	No	No	No
cobra	Yes	No	No	No

As nouns, cobra is a hypernym of Naja hannah; that is, cobra is a word with a broader meaning than Naja hannah:

Naja hannah: large cobra of southeastern Asia and the East Indies; the largest venomous snake; sometimes placed in genus Naja
cobra: venomous Asiatic and African elapid snakes that can expand the skin of the neck into a hood

Naja hannah (noun)	cobra (noun)
large cobra of southeastern Asia and the East Indies; the largest venomous snake; sometimes placed in genus Naja	venomous Asiatic and African elapid snakes that can expand the skin of the neck into a hood