television vs television receiver

television and television receiver both are nouns.

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

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

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

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

television (noun)	television receiver (noun)
a telecommunication system that transmits images of objects (stationary or moving) between distant points	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
broadcasting visual images of stationary or moving objects