wood widgeon vs Aix sponsa

wood widgeon and Aix sponsa both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood widgeon	Yes	No	No	No
Aix sponsa	Yes	No	No	No

As nouns, wood widgeon and Aix sponsa are synonyms defined as:

wood widgeon and Aix sponsa: showy North American duck that nests in hollow trees

Other synonyms of wood widgeon include summer duck, wood duck.

wood widgeon (noun)	Aix sponsa (noun)
showy North American duck that nests in hollow trees	showy North American duck that nests in hollow trees