brent goose vs brant goose

brent goose and brant goose both are nouns.

Word	Noun	Adjective	Verb	Adverb
brent goose	Yes	No	No	No
brant goose	Yes	No	No	No

As nouns, brent goose and brant goose are synonyms defined as:

brent goose and brant goose: small dark geese that breed in the north and migrate southward

Other synonyms of brent goose include brant, brent.

brent goose (noun)	brant goose (noun)
small dark geese that breed in the north and migrate southward	small dark geese that breed in the north and migrate southward