kinescope vs picture tube

kinescope and picture tube both are nouns.

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

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

kinescope and picture 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 television tube.

kinescope (noun)	picture 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