small civet vs civet cat

small civet and civet cat both are nouns.

Word	Noun	Adjective	Verb	Adverb
small civet	Yes	No	No	No
civet cat	Yes	No	No	No

As nouns, civet cat is a hypernym of small civet; that is, civet cat is a word with a broader meaning than small civet:

Other hypernyms of small civet include civet.

small civet (noun)	civet cat (noun)
a common civet of southeast Asia	cat-like mammal typically secreting musk used in perfumes
	raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings