protestation vs protest

protestation and protest both are nouns.

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

As nouns, protestation and protest are synonyms defined as:

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

protestation (verb)	protest (verb)
	utter words of protest
	affirm or avow formally or solemnly
	express opposition through action or words