pintail vs Anas acuta

pintail and Anas acuta both are nouns.

Word	Noun	Adjective	Verb	Adverb
pintail	Yes	No	No	No
Anas acuta	Yes	No	No	No

As nouns, pintail and Anas acuta are synonyms defined as:

pintail and Anas acuta: long-necked river duck of the Old and New Worlds having elongated central tail feathers

Other synonyms of pintail include pin-tailed duck.

pintail (noun)	Anas acuta (noun)
long-necked river duck of the Old and New Worlds having elongated central tail feathers	long-necked river duck of the Old and New Worlds having elongated central tail feathers