pleurodont vs fauna

pleurodont and fauna both are nouns.

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

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

pleurodont: an animal having teeth fused with the inner surface of the alveolar ridge without sockets
fauna: a living organism characterized by voluntary movement

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

pleurodont (noun)	fauna (noun)
an animal having teeth fused with the inner surface of the alveolar ridge without sockets	a living organism characterized by voluntary movement
	all the animal life in a particular region or period