oscilloscope vs cathode-ray oscilloscope

oscilloscope and cathode-ray oscilloscope both are nouns.

Word	Noun	Adjective	Verb	Adverb
oscilloscope	Yes	No	No	No
cathode-ray oscilloscope	Yes	No	No	No

As nouns, oscilloscope and cathode-ray oscilloscope are synonyms defined as:

oscilloscope and cathode-ray oscilloscope: electronic equipment that provides visual images of varying electrical quantities

Other synonyms of oscilloscope include CRO, scope.

oscilloscope (noun)	cathode-ray oscilloscope (noun)
electronic equipment that provides visual images of varying electrical quantities	electronic equipment that provides visual images of varying electrical quantities