urus vs ox

urus and ox both are nouns.

Word	Noun	Adjective	Verb	Adverb
urus	Yes	No	No	No
ox	Yes	No	No	No

As nouns, ox is a hypernym of urus; that is, ox is a word with a broader meaning than urus:

urus: large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle
ox: any of various wild bovines especially of the genera Bos or closely related Bibos

Other hypernyms of urus include wild ox.

urus (noun)	ox (noun)
large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle	any of various wild bovines especially of the genera Bos or closely related Bibos
	an adult castrated bull of the genus Bos; especially Bos taurus