transmitter vs communicator

transmitter and communicator both are nouns.

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

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

transmitter (noun)	communicator (noun)
set used to broadcast radio or tv signals	a person who communicates with others
any agent (person or animal or microorganism) that carries and transmits a disease
someone who transmits a message