sprat vs Clupea sprattus

sprat and Clupea sprattus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sprat	Yes	No	No	No
Clupea sprattus	Yes	No	No	No

As nouns, sprat and Clupea sprattus are synonyms defined as:

Other synonyms of sprat include brisling.

sprat (noun)	Clupea sprattus (noun)
small herring processed like a sardine	small herring processed like a sardine
small fatty European fish; usually smoked or canned like sardines