stereophony vs stereophonic system

stereophony and stereophonic system both are nouns.

Word	Noun	Adjective	Verb	Adverb
stereophony	Yes	No	No	No
stereophonic system	Yes	No	No	No

As nouns, stereophony and stereophonic system are synonyms defined as:

stereophony and stereophonic system: reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound

Other synonyms of stereophony include stereo, stereo system.

stereophony (noun)	stereophonic system (noun)
reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound	reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound