publicity man vs PR man

publicity man and PR man both are nouns.

Word	Noun	Adjective	Verb	Adverb
publicity man	Yes	No	No	No
PR man	Yes	No	No	No

As nouns, publicity man and PR man are synonyms defined as:

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

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

publicity man (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)