screech vs shout

screech and shout both are nouns.

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

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

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

As verbs, shout is a hypernym of screech; that is, shout is a word with a broader meaning than screech:

Other hypernyms of screech include call, cry, holler, hollo, scream, shout out, squall, yell.

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

screech (verb)	shout (verb)
utter a harsh abrupt scream	utter in a loud voice; talk in a loud voice (usually denoting characteristic manner of speaking)
make a high-pitched, screeching noise	utter a sudden loud cry
	utter aloud; often with surprise, horror, or joy
	use foul or abusive language towards