television news vs news

television news and news both are nouns.

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

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

television news: a television broadcast of news
news: a program devoted to current events, often using interviews and commentary

Other hypernyms of television news include news program, news show.

television news (noun)	news (noun)
a television broadcast of news	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