creepy-crawly vs fauna

creepy-crawly and fauna both are nouns.

Word	Noun	Adjective	Verb	Adverb
creepy-crawly	Yes	Yes	No	No
fauna	Yes	No	No	No

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

creepy-crawly: an animal that creeps or crawls (such as worms or spiders or insects)
fauna: a living organism characterized by voluntary movement

Other hypernyms of creepy-crawly include animal, animate being, beast, brute, creature.

creepy-crawly (noun)	fauna (noun)
an animal that creeps or crawls (such as worms or spiders or insects)	a living organism characterized by voluntary movement
	all the animal life in a particular region or period

creepy-crawly (adjective)	fauna (adjective)
causing a sensation as of things crawling on your skin