bald eagle vs American eagle

bald eagle and American eagle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bald eagle	Yes	No	No	No
American eagle	Yes	No	No	No

As nouns, bald eagle and American eagle are synonyms defined as:

bald eagle and American eagle: a large eagle of North America that has a white head and dark wings and body

Other synonyms of bald eagle include Haliaeetus leucocephalus.

bald eagle (noun)	American eagle (noun)
a large eagle of North America that has a white head and dark wings and body	a large eagle of North America that has a white head and dark wings and body