Pecten irradians vs bay scallop

Pecten irradians and bay scallop both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pecten irradians	Yes	No	No	No
bay scallop	Yes	No	No	No

As nouns, Pecten irradians and bay scallop are synonyms defined as:

Pecten irradians and bay scallop: a small scallop inhabiting shallow waters and mud flats of the Atlantic coast of North America

Pecten irradians (noun)	bay scallop (noun)
a small scallop inhabiting shallow waters and mud flats of the Atlantic coast of North America	a small scallop inhabiting shallow waters and mud flats of the Atlantic coast of North America
	muscle of small choice shallow-water scallops