war correspondent vs newswriter

war correspondent and newswriter both are nouns.

Word	Noun	Adjective	Verb	Adverb
war correspondent	Yes	No	No	No
newswriter	Yes	No	No	No

As nouns, newswriter is a hypernym of war correspondent; that is, newswriter is a word with a broader meaning than war correspondent:

war correspondent: a journalist who sends news reports and commentary from a combat zone or place of battle for publication or broadcast
newswriter: a journalist employed to provide news stories for newspapers or broadcast media

Other hypernyms of war correspondent include correspondent.

war correspondent (noun)	newswriter (noun)
a journalist who sends news reports and commentary from a combat zone or place of battle for publication or broadcast	a journalist employed to provide news stories for newspapers or broadcast media