dipper vs Bucephela albeola

dipper and Bucephela albeola both are nouns.

Word	Noun	Adjective	Verb	Adverb
dipper	Yes	No	No	No
Bucephela albeola	Yes	No	No	No

As nouns, dipper and Bucephela albeola are synonyms defined as:

dipper and Bucephela albeola: small North American diving duck; males have bushy head plumage

Other synonyms of dipper include bufflehead, butterball.

dipper (noun)	Bucephela albeola (noun)
small North American diving duck; males have bushy head plumage	small North American diving duck; males have bushy head plumage
small stocky diving bird without webbed feet; frequents fast-flowing streams and feeds along the bottom
a ladle that has a cup with a long handle