advocate vs propose

advocate is a noun but propose is not a noun.

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

As verbs, propose is a hypernym of advocate; that is, propose is a word with a broader meaning than advocate:

Other hypernyms of advocate include advise, suggest.

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

advocate (verb)	propose (verb)
push for something	present for consideration, examination, criticism, etc.
speak, plead, or argue in favor of	propose or intend
	make a proposal, declare a plan for something
	ask (someone) to marry you
	put forward; nominate for appointment to an office or for an honor or position