news vs latest

news and latest both are nouns.

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

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

Other hyponyms of news include good word.

news (noun)	latest (noun)
the quality of being sufficiently interesting to be reported in news bulletins	the most recent news or development
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

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