cobra vs elapid

cobra and elapid both are nouns.

Word	Noun	Adjective	Verb	Adverb
cobra	Yes	No	No	No
elapid	Yes	No	No	No

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

cobra: venomous Asiatic and African elapid snakes that can expand the skin of the neck into a hood
elapid: any of numerous venomous fanged snakes of warmer parts of both hemispheres

Other hypernyms of cobra include elapid snake.

cobra (noun)	elapid (noun)
venomous Asiatic and African elapid snakes that can expand the skin of the neck into a hood	any of numerous venomous fanged snakes of warmer parts of both hemispheres