broadcasting vs telecom

broadcasting and telecom both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcasting	Yes	No	No	No
telecom	Yes	No	No	No

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

broadcasting: taking part in a radio or tv program
telecom: (often plural) systems used in transmitting messages over a distance electronically

Other hypernyms of broadcasting include telecommunication.

broadcasting (noun)	telecom (noun)
taking part in a radio or tv program	(often plural) systems used in transmitting messages over a distance electronically
a medium that disseminates via telecommunications