Anas penelope vs widgeon

Anas penelope and widgeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anas penelope	Yes	No	No	No
widgeon	Yes	No	No	No

As nouns, Anas penelope and widgeon are synonyms defined as:

Anas penelope and widgeon: freshwater duck of Eurasia and northern Africa related to mallards and teals

Other synonyms of Anas penelope include wigeon.

Anas penelope (noun)	widgeon (noun)
freshwater duck of Eurasia and northern Africa related to mallards and teals	freshwater duck of Eurasia and northern Africa related to mallards and teals