photojournalism vs journalism

photojournalism and journalism both are nouns.

Word	Noun	Adjective	Verb	Adverb
photojournalism	Yes	No	No	No
journalism	Yes	No	No	No

As nouns, journalism is a hypernym of photojournalism; that is, journalism is a word with a broader meaning than photojournalism:

photojournalism: journalism that presents a story primarily through the use of pictures
journalism: newspapers and magazines collectively

Other hypernyms of photojournalism include news media.

photojournalism (noun)	journalism (noun)
journalism that presents a story primarily through the use of pictures	the profession of reporting or photographing or editing news stories for one of the media
	newspapers and magazines collectively