gulp vs verbalize

gulp is a noun but verbalize is not a noun.

Word	Noun	Adjective	Verb	Adverb
gulp	Yes	No	Yes	No
verbalize	No	No	Yes	No

As verbs, verbalize is a hypernym of gulp; that is, verbalize is a word with a broader meaning than gulp:

Other hypernyms of gulp include mouth, speak, talk, utter, verbalise.

gulp (noun)	verbalize (noun)
a large and hurried swallow
a spasmodic reflex of the throat made as if in swallowing

gulp (verb)	verbalize (verb)
utter or make a noise, as when swallowing too quickly	convert into a verb
to swallow hurriedly or greedily or in one draught	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise