protagonism vs advocacy

protagonism and advocacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
protagonism	Yes	No	No	No
advocacy	Yes	No	No	No

As nouns, protagonism and advocacy are synonyms defined as:

protagonism and advocacy: active support of an idea or cause etc.; especially the act of pleading or arguing for something

protagonism (noun)	advocacy (noun)
active support of an idea or cause etc.; especially the act of pleading or arguing for something	active support of an idea or cause etc.; especially the act of pleading or arguing for something