screaming vs vociferation

screaming and vociferation both are nouns.

Word	Noun	Adjective	Verb	Adverb
screaming	Yes	Yes	No	No
vociferation	Yes	No	No	No

As nouns, vociferation is a hypernym of screaming; that is, vociferation is a word with a broader meaning than screaming:

Other hypernyms of screaming include call, cry, outcry, shout, yell.

screaming (noun)	vociferation (noun)
sharp piercing cry	a loud utterance; often in protest or opposition
a high-pitched noise resembling a human cry

screaming (adjective)	vociferation (adjective)
marked by or causing boisterous merriment or convulsive laughter
so extremely intense as to evoke screams
resembling a scream in effect