northern shrike vs Lanius borealis

northern shrike and Lanius borealis both are nouns.

Word	Noun	Adjective	Verb	Adverb
northern shrike	Yes	No	No	No
Lanius borealis	Yes	No	No	No

As nouns, northern shrike and Lanius borealis are synonyms defined as:

northern shrike and Lanius borealis: a butcherbird of northern North America

northern shrike (noun)	Lanius borealis (noun)
a butcherbird of northern North America	a butcherbird of northern North America