woofer vs speaker system

woofer and speaker system both are nouns.

Word	Noun	Adjective	Verb	Adverb
woofer	Yes	No	No	No
speaker system	Yes	No	No	No

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

woofer: a loudspeaker that reproduces lower audio frequency sounds
speaker system: electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

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

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