civet cat vs palm civet

civet cat and palm civet both are nouns.

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

As nouns, palm civet is a hyponym of civet cat; that is, palm civet is a word with a more specific, narrower meaning than civet cat:

civet cat: cat-like mammal typically secreting musk used in perfumes
palm civet: spotted or striped arboreal civet of southeast Asia and East Indies

civet cat (noun)	palm civet (noun)
cat-like mammal typically secreting musk used in perfumes	spotted or striped arboreal civet of southeast Asia and East Indies
raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings