Sitta carolinensis vs white-breasted nuthatch

Sitta carolinensis and white-breasted nuthatch both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sitta carolinensis	Yes	No	No	No
white-breasted nuthatch	Yes	No	No	No

As nouns, Sitta carolinensis and white-breasted nuthatch are synonyms defined as:

Sitta carolinensis and white-breasted nuthatch: bluish-grey nuthatch with black head and white breast; of eastern North America

Sitta carolinensis (noun)	white-breasted nuthatch (noun)
bluish-grey nuthatch with black head and white breast; of eastern North America	bluish-grey nuthatch with black head and white breast; of eastern North America