advocate vs doer

advocate and doer both are nouns.

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

As nouns, doer is a hypernym of advocate; that is, doer is a word with a broader meaning than advocate:

Other hypernyms of advocate include actor, worker.

advocate (noun)	doer (noun)
a person who pleads for a cause or propounds an idea	a person who acts and gets things done
a lawyer who pleads cases in court

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