green-winged teal vs Anas crecca

green-winged teal and Anas crecca both are nouns.

Word	Noun	Adjective	Verb	Adverb
green-winged teal	Yes	No	No	No
Anas crecca	Yes	No	No	No

As nouns, green-winged teal and Anas crecca are synonyms defined as:

green-winged teal and Anas crecca: common teal of Eurasia and North America

Other synonyms of green-winged teal include greenwing.

green-winged teal (noun)	Anas crecca (noun)
common teal of Eurasia and North America	common teal of Eurasia and North America