swear vs protest

swear is not a noun while protest is a noun.

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

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

Other hyponyms of swear include hold, claim, take, attest, declare, assure, tell.

swear (noun)	protest (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

swear (verb)	protest (verb)
have faith or confidence in	utter words of protest
make a deposition; declare under oath	affirm or avow formally or solemnly
utter obscenities or profanities	express opposition through action or words
promise solemnly; take an oath
to declare or affirm solemnly and formally as true