piezometer vs measuring device

piezometer and measuring device both are nouns.

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

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

piezometer: a measuring instrument for measuring high pressures
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of piezometer include measuring instrument, measuring system.

piezometer (noun)	measuring device (noun)
a measuring instrument for measuring high pressures	instrument that shows the extent or amount or quantity or degree of something