screeching vs shout

screeching and shout both are nouns.

Word	Noun	Adjective	Verb	Adverb
screeching	Yes	No	No	No
shout	Yes	No	Yes	No

As nouns, shout is a hypernym of screeching; that is, shout is a word with a broader meaning than screeching:

Other hypernyms of screeching include call, cry, outcry, vociferation, yell.

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

screeching (verb)	shout (verb)
	utter in a loud voice; talk in a loud voice (usually denoting characteristic manner of speaking)
	utter a sudden loud cry
	utter aloud; often with surprise, horror, or joy
	use foul or abusive language towards