colorimeter vs measuring device

colorimeter and measuring device both are nouns.

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

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

colorimeter: a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of colorimeter include measuring instrument, measuring system.

colorimeter (noun)	measuring device (noun)
a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents	instrument that shows the extent or amount or quantity or degree of something