cows vs oxen

cows and oxen both are nouns.

Word	Noun	Adjective	Verb	Adverb
cows	Yes	No	No	No
oxen	Yes	No	No	No

As nouns, cows and oxen are synonyms defined as:

cows and oxen: domesticated bovine animals as a group regardless of sex or age

Other synonyms of cows include Bos taurus, cattle, kine.

cows (noun)	oxen (noun)
domesticated bovine animals as a group regardless of sex or age	domesticated bovine animals as a group regardless of sex or age