public relations man vs press agent

public relations man and press agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
public relations man	Yes	No	No	No
press agent	Yes	No	No	No

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

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

Other synonyms of public relations man include PR man, publicity man.

public relations man (noun)	press agent (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)