cathode-ray oscilloscope vs monitor

cathode-ray oscilloscope and monitor both are nouns.

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

cathode-ray oscilloscope (noun)	monitor (noun)
electronic equipment that provides visual images of varying electrical quantities	any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles
	a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble
	electronic equipment that is used to check the quality or content of electronic transmissions
	display produced by a device that takes signals and displays them on a television screen or a computer monitor
	someone who gives a warning so that a mistake can be avoided
	someone who supervises (an examination)

cathode-ray oscilloscope (verb)	monitor (verb)
	keep tabs on; keep an eye on; keep under surveillance
	check, track, or observe by means of a receiver