barometer vs measuring system

barometer and measuring system both are nouns.

Word	Noun	Adjective	Verb	Adverb
barometer	Yes	No	No	No
measuring system	Yes	No	No	No

As nouns, measuring system is a hypernym of barometer; that is, measuring system is a word with a broader meaning than barometer:

barometer: an instrument that measures atmospheric pressure
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of barometer include measuring device, measuring instrument.

barometer (noun)	measuring system (noun)
an instrument that measures atmospheric pressure	instrument that shows the extent or amount or quantity or degree of something