chordate vs fauna

chordate and fauna both are nouns.

Word	Noun	Adjective	Verb	Adverb
chordate	Yes	Yes	No	No
fauna	Yes	No	No	No

As nouns, fauna is a hypernym of chordate; that is, fauna is a word with a broader meaning than chordate:

chordate: any animal of the phylum Chordata having a notochord or spinal column
fauna: a living organism characterized by voluntary movement

Other hypernyms of chordate include animal, animate being, beast, brute, creature.

chordate (noun)	fauna (noun)
any animal of the phylum Chordata having a notochord or spinal column	a living organism characterized by voluntary movement
	all the animal life in a particular region or period

chordate (adjective)	fauna (adjective)
of or relating to or characteristic of the Chordata