king cobra vs Naja hannah

king cobra and Naja hannah both are nouns.

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

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

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

Other synonyms of king cobra include hamadryad, Ophiophagus hannah.

king cobra (noun)	Naja hannah (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