protest vs avow

protest is a noun but avow is not a noun.

Word	Noun	Adjective	Verb	Adverb
protest	Yes	No	Yes	No
avow	No	No	Yes	No

As verbs, avow is a hypernym of protest; that is, avow is a word with a broader meaning than protest:

Other hypernyms of protest include affirm, assert, aver, swan, swear, verify.

protest (noun)	avow (noun)
the act of protesting; a public (often organized) manifestation of dissent
a formal and solemn declaration of objection
the act of making a strong public expression of disagreement and disapproval

protest (verb)	avow (verb)
utter words of protest	to declare or affirm solemnly and formally as true
affirm or avow formally or solemnly	admit openly and bluntly; make no bones about
express opposition through action or words