suspicion vs antagonism

suspicion and antagonism both are nouns.

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

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

Other hypernyms of suspicion include enmity, hostility.

suspicion (noun)	antagonism (noun)
being of a suspicious nature	(biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure
doubt about someone's honesty	an actively expressed feeling of dislike and hostility
an impression that something might be the case	the relation between opposing principles or forces or factors
the state of being suspected	a state of deep-seated ill-will