broadcasting vs mass medium

broadcasting and mass medium both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcasting	Yes	No	No	No
mass medium	Yes	No	No	No

As nouns, mass medium is a hypernym of broadcasting; that is, mass medium is a word with a broader meaning than broadcasting:

broadcasting: a medium that disseminates via telecommunications
mass medium: (usually plural) transmissions that are disseminated widely to the public

Other hypernyms of broadcasting include medium.

broadcasting (noun)	mass medium (noun)
taking part in a radio or tv program	(usually plural) transmissions that are disseminated widely to the public
a medium that disseminates via telecommunications