press agent vs publicity man

press agent and publicity man both are nouns.

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

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

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

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

press agent (noun)	publicity 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)