scream vs shout

scream and shout both are nouns.

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

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

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

As verbs, scream and shout are synonyms defined as:

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

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

scream: utter or declare in a very loud voice
shout: utter in a loud voice; talk in a loud voice (usually denoting characteristic manner of speaking)

scream (noun)	shout (noun)
sharp piercing cry	a loud utterance; often in protest or opposition
a joke that seems extremely funny
a high-pitched noise resembling a human cry

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