black-footed albatross vs gooney bird

black-footed albatross and gooney bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
black-footed albatross	Yes	No	No	No
gooney bird	Yes	No	No	No

As nouns, black-footed albatross and gooney bird are synonyms defined as:

black-footed albatross and gooney bird: a variety of albatross with black feet

Other synonyms of black-footed albatross include Diomedea nigripes, gooney, goonie, goony.

black-footed albatross (noun)	gooney bird (noun)
a variety of albatross with black feet	a variety of albatross with black feet