booster amplifier vs relay station

booster amplifier and relay station both are nouns.

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

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

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

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

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