shriek vs yell

shriek and yell both are nouns.

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

As nouns, yell is a hypernym of shriek; that is, yell is a word with a broader meaning than shriek:

Other hypernyms of shriek include call, cry, outcry, shout, vociferation.

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

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

shriek (noun)	yell (noun)
sharp piercing cry	a loud utterance; often in protest or opposition
a high-pitched noise resembling a human cry	a loud utterance of emotion (especially when inarticulate)

shriek (verb)	yell (verb)
utter a shrill cry	utter or declare in a very loud voice
	utter a sudden loud cry