barnacle vs Branta leucopsis

barnacle and Branta leucopsis both are nouns.

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

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

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

Other synonyms of barnacle include barnacle goose.

barnacle (noun)	Branta leucopsis (noun)
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
European goose smaller than the brant; breeds in the far north