gray catbird vs Dumetella carolinensis

gray catbird and Dumetella carolinensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
gray catbird	Yes	No	No	No
Dumetella carolinensis	Yes	No	No	No

As nouns, gray catbird and Dumetella carolinensis are synonyms defined as:

gray catbird and Dumetella carolinensis: North American songbird whose call resembles a cat's mewing

Other synonyms of gray catbird include catbird, grey catbird.

gray catbird (noun)	Dumetella carolinensis (noun)
North American songbird whose call resembles a cat's mewing	North American songbird whose call resembles a cat's mewing