kinescope vs television tube

kinescope and television tube both are nouns.

Word	Noun	Adjective	Verb	Adverb
kinescope	Yes	No	No	No
television tube	Yes	No	No	No

As nouns, kinescope and television tube are synonyms defined as:

kinescope and television tube: a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen

Other synonyms of kinescope include picture tube.

kinescope (noun)	television tube (noun)
a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen	a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen