cardiac monitor vs scope

cardiac monitor and scope both are nouns.

Word	Noun	Adjective	Verb	Adverb
cardiac monitor	Yes	No	No	No
scope	Yes	No	No	No

cardiac monitor (noun)	scope (noun)
a piece of electronic equipment for continual observation of the function of the heart	electronic equipment that provides visual images of varying electrical quantities
	a magnifier of images of distant objects
	an area in which something acts or operates or has power or control:
	the state of the environment in which a situation exists