Dumetella carolinensis vs grey catbird

Dumetella carolinensis and grey catbird both are nouns.

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

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

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

Other synonyms of Dumetella carolinensis include catbird, gray catbird.

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