fisher cat vs Martes pennanti

fisher cat and Martes pennanti both are nouns.

Word	Noun	Adjective	Verb	Adverb
fisher cat	Yes	No	No	No
Martes pennanti	Yes	No	No	No

As nouns, fisher cat and Martes pennanti are synonyms defined as:

fisher cat and Martes pennanti: large dark brown North American arboreal carnivorous mammal

Other synonyms of fisher cat include black cat, fisher, pekan.

fisher cat (noun)	Martes pennanti (noun)
large dark brown North American arboreal carnivorous mammal	large dark brown North American arboreal carnivorous mammal