public relations person vs doer

public relations person and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
public relations person	Yes	No	No	No
doer	Yes	No	No	No

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

public relations person: a person employed to establish and promote a favorable relationship with the public
doer: a person who acts and gets things done

Other hypernyms of public relations person include actor, worker.

public relations person (noun)	doer (noun)
a person employed to establish and promote a favorable relationship with the public	a person who acts and gets things done