shrieking vs outcry

shrieking and outcry both are nouns.

Word	Noun	Adjective	Verb	Adverb
shrieking	Yes	No	No	No
outcry	Yes	No	Yes	No

As nouns, outcry is a hypernym of shrieking; that is, outcry is a word with a broader meaning than shrieking:

Other hypernyms of shrieking include call, cry, shout, vociferation, yell.

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

shrieking (verb)	outcry (verb)
	utter aloud; often with surprise, horror, or joy
	shout louder than