tannoy vs loudspeaker system

tannoy and loudspeaker system both are nouns.

Word	Noun	Adjective	Verb	Adverb
tannoy	Yes	No	No	No
loudspeaker system	Yes	No	No	No

As nouns, loudspeaker system is a hypernym of tannoy; that is, loudspeaker system is a word with a broader meaning than tannoy:

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

Other hypernyms of tannoy include loudspeaker, speaker, speaker system, speaker unit.

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