vernier micrometer vs caliper

vernier micrometer and caliper both are nouns.

Word	Noun	Adjective	Verb	Adverb
vernier micrometer	Yes	No	No	No
caliper	Yes	No	Yes	No

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

vernier micrometer: a caliper with a vernier scale for very fine measurements
caliper: an instrument for measuring the distance between two points

Other hypernyms of vernier micrometer include calliper.

vernier micrometer (noun)	caliper (noun)
a caliper with a vernier scale for very fine measurements	an instrument for measuring the distance between two points

vernier micrometer (verb)	caliper (verb)
	measure the diameter of something with calipers