shout vs vocalization

shout and vocalization both are nouns.

Word	Noun	Adjective	Verb	Adverb
shout	Yes	No	Yes	No
vocalization	Yes	No	No	No

As nouns, vocalization is a hypernym of shout; that is, vocalization is a word with a broader meaning than shout:

Other hypernyms of shout include utterance.

shout (noun)	vocalization (noun)
a loud utterance; often in protest or opposition	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract
	the use of uttered sounds for auditory communication

shout (verb)	vocalization (verb)
utter in a loud voice; talk in a loud voice (usually denoting characteristic manner of speaking)
utter a sudden loud cry
utter aloud; often with surprise, horror, or joy
use foul or abusive language towards