jaguar vs panther

jaguar and panther both are nouns.

Word	Noun	Adjective	Verb	Adverb
jaguar	Yes	No	No	No
panther	Yes	No	No	No

As nouns, jaguar and panther are synonyms defined as:

jaguar and panther: a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis

Other synonyms of jaguar include Felis onca, Panthera onca.

jaguar (noun)	panther (noun)
a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis	a leopard in the black color phase
	a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis
	large American feline resembling a lion