latest vs news

latest and news both are nouns.

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

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

Other hypernyms of latest include intelligence, tidings, word.

latest (noun)	news (noun)
the most recent news or development	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

latest (adjective)	news (adjective)
up to the immediate present; most recent or most up-to-date
in the current fashion or style