good word vs news

good word and news both are nouns.

Word	Noun	Adjective	Verb	Adverb
good word	Yes	No	No	No
news	Yes	No	No	No

As nouns, news is a hypernym of good word; that is, news is a word with a broader meaning than good word:

Other hypernyms of good word include intelligence, tidings, word.

good word (noun)	news (noun)
good news	the quality of being sufficiently interesting to be reported in news bulletins
something that recommends (or expresses commendation of) a person or thing as worthy or desirable	information about recent and important events
	information reported in a newspaper or news magazine
	a program devoted to current events, often using interviews and commentary
	informal information of any kind that is not previously known to someone