proponent vs advocate

proponent and advocate both are nouns.

Word	Noun	Adjective	Verb	Adverb
proponent	Yes	No	No	No
advocate	Yes	No	Yes	No

As nouns, proponent and advocate are synonyms defined as:

proponent and advocate: a person who pleads for a cause or propounds an idea

Other synonyms of proponent include advocator, exponent.

proponent (noun)	advocate (noun)
a person who pleads for a cause or propounds an idea	a person who pleads for a cause or propounds an idea
	a lawyer who pleads cases in court

proponent (verb)	advocate (verb)
	push for something
	speak, plead, or argue in favor of