caliper vs measuring instrument

caliper and measuring instrument both are nouns.

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

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

caliper: an instrument for measuring the distance between two points
measuring instrument: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of caliper include measuring device, measuring system.

caliper (noun)	measuring instrument (noun)
an instrument for measuring the distance between two points	instrument that shows the extent or amount or quantity or degree of something

caliper (verb)	measuring instrument (verb)
measure the diameter of something with calipers