black-footed albatross vs Diomedea nigripes

black-footed albatross and Diomedea nigripes both are nouns.

Word	Noun	Adjective	Verb	Adverb
black-footed albatross	Yes	No	No	No
Diomedea nigripes	Yes	No	No	No

As nouns, black-footed albatross and Diomedea nigripes are synonyms defined as:

black-footed albatross and Diomedea nigripes: a variety of albatross with black feet

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

black-footed albatross (noun)	Diomedea nigripes (noun)
a variety of albatross with black feet	a variety of albatross with black feet