darter vs fauna

darter and fauna both are nouns.

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

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

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

darter (noun)	fauna (noun)
a person or other animal that moves abruptly and rapidly	a living organism characterized by voluntary movement
fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill	all the animal life in a particular region or period