bathometer vs measuring device

bathometer and measuring device both are nouns.

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

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

bathometer: an instrument that measures the depth of water
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of bathometer include measuring instrument, measuring system.

bathometer (noun)	measuring device (noun)
an instrument that measures the depth of water	instrument that shows the extent or amount or quantity or degree of something