Anas americana vs baldpate

Anas americana and baldpate both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anas americana	Yes	No	No	No
baldpate	Yes	No	No	No

As nouns, Anas americana and baldpate are synonyms defined as:

Anas americana and baldpate: a widgeon the male of which has a white crown

Other synonyms of Anas americana include American widgeon.

Anas americana (noun)	baldpate (noun)
a widgeon the male of which has a white crown	a widgeon the male of which has a white crown
	a person whose head is bald or shaved