old squaw vs Clangula hyemalis

old squaw and Clangula hyemalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
old squaw	Yes	No	No	No
Clangula hyemalis	Yes	No	No	No

As nouns, old squaw and Clangula hyemalis are synonyms defined as:

old squaw and Clangula hyemalis: a common long-tailed sea duck of the northern parts of the United States

Other synonyms of old squaw include oldwife.

old squaw (noun)	Clangula hyemalis (noun)
a common long-tailed sea duck of the northern parts of the United States	a common long-tailed sea duck of the northern parts of the United States