television set vs goggle box

television set and goggle box both are nouns.

Word	Noun	Adjective	Verb	Adverb
television set	Yes	No	No	No
goggle box	Yes	No	No	No

As nouns, television set and goggle box are synonyms defined as:

television set and goggle box: an electronic device that receives television signals and displays them on a screen

Other synonyms of television set include boob tube, idiot box, television, television receiver, telly, tv, tv set.

television set (noun)	goggle box (noun)
an electronic device that receives television signals and displays them on a screen	an electronic device that receives television signals and displays them on a screen