scream vs hollo

scream and hollo both are nouns.

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

As verbs, scream and hollo are synonyms defined as:

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

As verbs, hollo is a hyponym of scream; that is, hollo is a word with a more specific, narrower meaning than scream:

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

scream (verb)	hollo (verb)
utter a sudden loud cry	utter a sudden loud cry
utter or declare in a very loud voice	cry hollo
make a loud, piercing sound	encourage somebody by crying hollo