paging vs vocalization

paging and vocalization both are nouns.

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

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

paging: calling out the name of a person (especially by a loudspeaker system)
vocalization: the use of uttered sounds for auditory communication

Other hypernyms of paging include utterance.

paging (noun)	vocalization (noun)
calling out the name of a person (especially by a loudspeaker system)	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract
the system of numbering pages	the use of uttered sounds for auditory communication