news vs news show

news and news show both are nouns.

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

As nouns, news and news show are synonyms defined as:

news and news show: a program devoted to current events, often using interviews and commentary

Other synonyms of news include news program.

news (noun)	news show (noun)
the quality of being sufficiently interesting to be reported in news bulletins	a program devoted to current events, often using interviews and commentary
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