business news vs news

business news and news both are nouns.

Word	Noun	Adjective	Verb	Adverb
business news	Yes	No	No	No
news	Yes	No	No	No

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

business news (noun)	news (noun)
news about businesses and investments	the quality of being sufficiently interesting to be reported in news bulletins
	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