relay station vs booster station

relay station and booster station both are nouns.

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

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

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

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

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