atmometer vs measuring device

atmometer and measuring device both are nouns.

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

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

atmometer: an instrument that measures rate of evaporation of water
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of atmometer include measuring instrument, measuring system.

atmometer (noun)	measuring device (noun)
an instrument that measures rate of evaporation of water	instrument that shows the extent or amount or quantity or degree of something