ghetto blaster vs stereophony

ghetto blaster and stereophony both are nouns.

Word	Noun	Adjective	Verb	Adverb
ghetto blaster	Yes	No	No	No
stereophony	Yes	No	No	No

As nouns, stereophony is a hypernym of ghetto blaster; that is, stereophony is a word with a broader meaning than ghetto blaster:

ghetto blaster: a portable stereo
stereophony: reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound

Other hypernyms of ghetto blaster include stereo, stereo system, stereophonic system.

ghetto blaster (noun)	stereophony (noun)
a portable stereo	reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound