haranguer vs public speaker

haranguer and public speaker both are nouns.

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

As nouns, public speaker is a hypernym of haranguer; that is, public speaker is a word with a broader meaning than haranguer:

Other hypernyms of haranguer include orator, rhetorician, speechifier, speechmaker.

haranguer (noun)	public speaker (noun)
a public speaker who delivers a loud or forceful or angry speech	a person who delivers a speech or oration