broadcaster vs communicator

broadcaster and communicator both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcaster	Yes	No	No	No
communicator	Yes	No	No	No

As nouns, communicator is a hypernym of broadcaster; that is, communicator is a word with a broader meaning than broadcaster:

broadcaster (noun)	communicator (noun)
a mechanical device for scattering something (seed or fertilizer or sand etc.) in all directions	a person who communicates with others
someone who broadcasts on radio or television