relay transmitter vs booster amplifier

relay transmitter and booster amplifier both are nouns.

Word	Noun	Adjective	Verb	Adverb
relay transmitter	Yes	No	No	No
booster amplifier	Yes	No	No	No

As nouns, relay transmitter and booster amplifier are synonyms defined as:

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

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

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