newswriter vs pressman

newswriter and pressman both are nouns.

Word	Noun	Adjective	Verb	Adverb
newswriter	Yes	No	No	No
pressman	Yes	No	No	No

As nouns, pressman is a hyponym of newswriter; that is, pressman is a word with a more specific, narrower meaning than newswriter:

newswriter: a journalist employed to provide news stories for newspapers or broadcast media
pressman: a male journalist employed to provide news stories for newspapers or broadcast media

Other hyponyms of newswriter include foreign correspondent, war correspondent, newspaperwoman, newspaperman.

newswriter (noun)	pressman (noun)
a journalist employed to provide news stories for newspapers or broadcast media	someone whose occupation is printing
	a male journalist employed to provide news stories for newspapers or broadcast media