Naja hannah vs king cobra

Naja hannah and king cobra both are nouns.

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

As nouns, Naja hannah and king cobra are synonyms defined as:

Naja hannah and king cobra: large cobra of southeastern Asia and the East Indies; the largest venomous snake; sometimes placed in genus Naja

Other synonyms of Naja hannah include hamadryad, Ophiophagus hannah.

Naja hannah (noun)	king cobra (noun)
large cobra of southeastern Asia and the East Indies; the largest venomous snake; sometimes placed in genus Naja	large cobra of southeastern Asia and the East Indies; the largest venomous snake; sometimes placed in genus Naja