audiometer vs measuring device

audiometer and measuring device both are nouns.

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

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

audiometer: an instrument used to measure the sensitivity of hearing
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of audiometer include measuring instrument, measuring system.

audiometer (noun)	measuring device (noun)
an instrument used to measure the sensitivity of hearing	instrument that shows the extent or amount or quantity or degree of something