scream vs holler

scream and holler both are nouns.

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

As verbs, scream and holler are synonyms defined as:

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

scream (noun)	holler (noun)
sharp piercing cry	a very loud utterance (like the sound of an animal)
a joke that seems extremely funny	a small valley between mountains
a high-pitched noise resembling a human cry

scream (verb)	holler (verb)
utter a sudden loud cry	complain
utter or declare in a very loud voice	utter a sudden loud cry
make a loud, piercing sound	shout out