antagonism vs cold war

antagonism and cold war both are nouns.

Word	Noun	Adjective	Verb	Adverb
antagonism	Yes	No	No	No
cold war	Yes	No	No	No

As nouns, cold war is a hyponym of antagonism; that is, cold war is a word with a more specific, narrower meaning than antagonism:

antagonism: a state of deep-seated ill-will
cold war: a state of political hostility between countries using means short of armed warfare

Other hyponyms of antagonism include latent hostility, tension, state of war, war, suspicion.

antagonism (noun)	cold war (noun)
(biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure	a state of political hostility between countries using means short of armed warfare
an actively expressed feeling of dislike and hostility
the relation between opposing principles or forces or factors
a state of deep-seated ill-will