barometer vs measuring device

barometer and measuring device both are nouns.

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

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

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

Other hypernyms of barometer include measuring instrument, measuring system.

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