Clupea harangus vs herring

Clupea harangus and herring both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clupea harangus	Yes	No	No	No
herring	Yes	No	No	No

As nouns, Clupea harangus and herring are synonyms defined as:

Clupea harangus and herring: commercially important food fish of northern waters of both Atlantic and Pacific

Clupea harangus (noun)	herring (noun)
commercially important food fish of northern waters of both Atlantic and Pacific	commercially important food fish of northern waters of both Atlantic and Pacific
	valuable flesh of fatty fish from shallow waters of northern Atlantic or Pacific; usually salted or pickled