fauna vs being

fauna and being both are nouns.

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

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

fauna: a living organism characterized by voluntary movement
being: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of fauna include organism.

fauna (noun)	being (noun)
a living organism characterized by voluntary movement	a living thing that has (or can develop) the ability to act or function independently
all the animal life in a particular region or period	the state or fact of existing