shrill vs scream

shrill is not a noun while scream is a noun.

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

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

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

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

shrill (adjective)	scream (adjective)
of colors that are bright and gaudy
having or emitting a high-pitched and sharp tone or tones
being sharply insistent on being heard

shrill (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