news organisation vs news agency

news organisation and news agency both are nouns.

Word	Noun	Adjective	Verb	Adverb
news organisation	Yes	No	No	No
news agency	Yes	No	No	No

As nouns, news organisation and news agency are synonyms defined as:

news organisation and news agency: an agency to collects news reports for newspapers and distributes it electronically

Other synonyms of news organisation include news organization, press agency, press association, wire service.

news organisation (noun)	news agency (noun)
an agency to collects news reports for newspapers and distributes it electronically	an agency to collects news reports for newspapers and distributes it electronically