Fossa fossa vs civet cat

Fossa fossa and civet cat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fossa fossa	Yes	No	No	No
civet cat	Yes	No	No	No

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

Other hypernyms of Fossa fossa include civet.

Fossa fossa (noun)	civet cat (noun)
civet of Madagascar	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