urus vs Bos primigenius

urus and Bos primigenius both are nouns.

Word	Noun	Adjective	Verb	Adverb
urus	Yes	No	No	No
Bos primigenius	Yes	No	No	No

As nouns, urus and Bos primigenius are synonyms defined as:

urus and Bos primigenius: large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle

Other synonyms of urus include aurochs.

urus (noun)	Bos primigenius (noun)
large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle	large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle