tv set vs television set

tv set and television set both are nouns.

Word	Noun	Adjective	Verb	Adverb
tv set	Yes	No	No	No
television set	Yes	No	No	No

As nouns, tv set and television set are synonyms defined as:

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

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

tv set (noun)	television set (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