shout out vs screech

shout out is not a noun while screech is a noun.

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

As verbs, screech is a hyponym of shout out; that is, screech is a word with a more specific, narrower meaning than shout out:

Other hyponyms of shout out include hollo, hurrah, halloo, whoop, pipe, pipe up, shriek, shrill, howl, roar, ululate, wail, yaup, yawl, screak, skreak, skreigh, squawk.

shout out (noun)	screech (noun)
	sharp piercing cry
	a high-pitched noise resembling a human cry

shout out (verb)	screech (verb)
utter a sudden loud cry	utter a harsh abrupt scream
utter in a very loud voice	make a high-pitched, screeching noise