Bos primigenius vs urus

Bos primigenius and urus both are nouns.

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

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

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

Other synonyms of Bos primigenius include aurochs.

Bos primigenius (noun)	urus (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