loudspeaker system vs speaker unit

loudspeaker system and speaker unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
loudspeaker system	Yes	No	No	No
speaker unit	Yes	No	No	No

As nouns, loudspeaker system and speaker unit are synonyms defined as:

loudspeaker system and speaker unit: electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

Other synonyms of loudspeaker system include loudspeaker, speaker, speaker system.

loudspeaker system (noun)	speaker unit (noun)
electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance	electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance