television receiver vs tv set

television receiver and tv set both are nouns.

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

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

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

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

television receiver (noun)	tv 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