baldpate vs Anas americana

baldpate and Anas americana both are nouns.

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

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

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

Other synonyms of baldpate include American widgeon.

baldpate (noun)	Anas americana (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