Branta leucopsis vs barnacle

Branta leucopsis and barnacle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Branta leucopsis	Yes	No	No	No
barnacle	Yes	No	No	No

As nouns, Branta leucopsis and barnacle are synonyms defined as:

Branta leucopsis and barnacle: European goose smaller than the brant; breeds in the far north

Other synonyms of Branta leucopsis include barnacle goose.

Branta leucopsis (noun)	barnacle (noun)
European goose smaller than the brant; breeds in the far north	marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces
	European goose smaller than the brant; breeds in the far north