shriek vs scream

shriek and scream both are nouns.

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

As nouns, shriek and scream are synonyms defined as:

Other synonyms of shriek include screaming, screech, screeching, shrieking.

As nouns, shriek and scream are synonyms defined as:

Other synonyms of shriek include screaming, screech, screeching, shrieking.

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

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

shriek (noun)	scream (noun)
sharp piercing cry	sharp piercing cry
a high-pitched noise resembling a human cry	a joke that seems extremely funny
	a high-pitched noise resembling a human cry

shriek (verb)	scream (verb)
utter a shrill cry	utter a sudden loud cry
	utter or declare in a very loud voice
	make a loud, piercing sound