cougar vs puma

cougar and puma both are nouns.

Word	Noun	Adjective	Verb	Adverb
cougar	Yes	No	No	No
puma	Yes	No	No	No

As nouns, cougar and puma are synonyms defined as:

Other synonyms of cougar include catamount, Felis concolor, mountain lion, painter, panther.

cougar (noun)	puma (noun)
large American feline resembling a lion	large American feline resembling a lion