Sardina pilchardus vs sardine

Sardina pilchardus and sardine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sardina pilchardus	Yes	No	No	No
sardine	Yes	No	No	No

As nouns, Sardina pilchardus and sardine are synonyms defined as:

Sardina pilchardus and sardine: small fishes found in great schools along coasts of Europe; smaller and rounder than herring

Other synonyms of Sardina pilchardus include pilchard.

Sardina pilchardus (noun)	sardine (noun)
small fishes found in great schools along coasts of Europe; smaller and rounder than herring	any of various small edible herring or related food fishes frequently canned
	small fishes found in great schools along coasts of Europe; smaller and rounder than herring
	small fatty fish usually canned
	a deep orange-red variety of chalcedony