greenwing vs green-winged teal

greenwing and green-winged teal both are nouns.

Word	Noun	Adjective	Verb	Adverb
greenwing	Yes	No	No	No
green-winged teal	Yes	No	No	No

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

greenwing and green-winged teal: common teal of Eurasia and North America

Other synonyms of greenwing include Anas crecca.

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