actinometer vs measuring system

actinometer and measuring system both are nouns.

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

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

actinometer: an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect)
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of actinometer include measuring device, measuring instrument.

actinometer (noun)	measuring system (noun)
an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect)	instrument that shows the extent or amount or quantity or degree of something