antagonism vs enmity

antagonism and enmity both are nouns.

Word	Noun	Adjective	Verb	Adverb
antagonism	Yes	No	No	No
enmity	Yes	No	No	No

As nouns, enmity is a hypernym of antagonism; that is, enmity is a word with a broader meaning than antagonism:

Other hypernyms of antagonism include dislike, hostility, ill will.

As nouns, antagonism and enmity are synonyms defined as:

Other synonyms of antagonism include hostility.

antagonism (noun)	enmity (noun)
(biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure	the feeling of a hostile person
an actively expressed feeling of dislike and hostility	a state of deep-seated ill-will
the relation between opposing principles or forces or factors
a state of deep-seated ill-will