latent hostility vs antagonism

latent hostility and antagonism both are nouns.

Word	Noun	Adjective	Verb	Adverb
latent hostility	Yes	No	No	No
antagonism	Yes	No	No	No

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

Other hypernyms of latent hostility include enmity, hostility.

latent hostility (noun)	antagonism (noun)
feelings of hostility that are not manifest	(biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure
	an actively expressed feeling of dislike and hostility
	the relation between opposing principles or forces or factors
	a state of deep-seated ill-will