monitoring device vs scope

monitoring device and scope both are nouns.

Word	Noun	Adjective	Verb	Adverb
monitoring device	Yes	No	No	No
scope	Yes	No	No	No

monitoring device (noun)	scope (noun)
display produced by a device that takes signals and displays them on a television screen or a computer monitor	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