spirometer vs measuring system

spirometer and measuring system both are nouns.

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

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

spirometer: a measuring instrument for measuring the vital capacity of the lungs
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of spirometer include measuring device, measuring instrument.

spirometer (noun)	measuring system (noun)
a measuring instrument for measuring the vital capacity of the lungs	instrument that shows the extent or amount or quantity or degree of something