measuring instrument vs measuring system

measuring instrument and measuring system both are nouns.

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

As nouns, measuring instrument and measuring system are synonyms defined as:

measuring instrument and measuring system: instrument that shows the extent or amount or quantity or degree of something

Other synonyms of measuring instrument include measuring device.

measuring instrument (noun)	measuring system (noun)
instrument that shows the extent or amount or quantity or degree of something	instrument that shows the extent or amount or quantity or degree of something