relay link vs booster station

relay link and booster station both are nouns.

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

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

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

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

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