varment vs fauna

varment and fauna both are nouns.

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

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

varment: any usually predatory wild animal considered undesirable; e.g., coyote
fauna: a living organism characterized by voluntary movement

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

varment (noun)	fauna (noun)
any usually predatory wild animal considered undesirable; e.g., coyote	a living organism characterized by voluntary movement
	all the animal life in a particular region or period