Atlantic croaker vs Micropogonias undulatus

Atlantic croaker and Micropogonias undulatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Atlantic croaker	Yes	No	No	No
Micropogonias undulatus	Yes	No	No	No

As nouns, Atlantic croaker and Micropogonias undulatus are synonyms defined as:

Atlantic croaker and Micropogonias undulatus: a silvery-bodied croaker with dark markings and tiny barbels

Atlantic croaker (noun)	Micropogonias undulatus (noun)
a silvery-bodied croaker with dark markings and tiny barbels	a silvery-bodied croaker with dark markings and tiny barbels