presenter vs advocator

presenter and advocator both are nouns.

Word	Noun	Adjective	Verb	Adverb
presenter	Yes	No	No	No
advocator	Yes	No	No	No

As nouns, advocator is a hypernym of presenter; that is, advocator is a word with a broader meaning than presenter:

presenter: an advocate who presents a person (as for an award or a degree or an introduction etc.)
advocator: a person who pleads for a cause or propounds an idea

Other hypernyms of presenter include advocate, exponent, proponent.

presenter (noun)	advocator (noun)
person who makes a gift of property	a person who pleads for a cause or propounds an idea
an advocate who presents a person (as for an award or a degree or an introduction etc.)
someone who presents a message of some sort (as a petition or an address or a check or a memorial etc.)