press agent vs PR man

press agent and PR man both are nouns.

Word	Noun	Adjective	Verb	Adverb
press agent	Yes	No	No	No
PR man	Yes	No	No	No

As nouns, press agent and PR man are synonyms defined as:

press agent and PR man: someone employed to arrange publicity (for a firm or a public figure)

Other synonyms of press agent include public relations man, publicity man.

press agent (noun)	PR man (noun)
someone employed to arrange publicity (for a firm or a public figure)	someone employed to arrange publicity (for a firm or a public figure)