relay station vs relay transmitter

relay station and relay transmitter both are nouns.

Word	Noun	Adjective	Verb	Adverb
relay station	Yes	No	No	No
relay transmitter	Yes	No	No	No

As nouns, relay station and relay transmitter are synonyms defined as:

relay station and relay transmitter: an amplifier for restoring the strength of a transmitted signal

Other synonyms of relay station include booster, booster amplifier, booster station, relay link.

relay station (noun)	relay transmitter (noun)
an amplifier for restoring the strength of a transmitted signal	an amplifier for restoring the strength of a transmitted signal