speechmaker vs public speaker

speechmaker and public speaker both are nouns.

Word	Noun	Adjective	Verb	Adverb
speechmaker	Yes	No	No	No
public speaker	Yes	No	No	No

As nouns, speechmaker and public speaker are synonyms defined as:

speechmaker and public speaker: a person who delivers a speech or oration

Other synonyms of speechmaker include orator, rhetorician, speechifier.

speechmaker (noun)	public speaker (noun)
a person who delivers a speech or oration	a person who delivers a speech or oration