measure vs plumb

measure and plumb both are nouns.

Word	Noun	Adjective	Verb	Adverb
measure	Yes	No	Yes	No
plumb	Yes	Yes	Yes	Yes

As verbs, plumb is a hyponym of measure; that is, plumb is a word with a more specific, narrower meaning than measure:

Other hyponyms of measure include gauge, scale, meter, pace, step, clock, time, fathom, sound, titrate, librate, weigh.

measure (noun)	plumb (noun)
how much there is or how many there are of something that you can quantify	the metal bob of a plumb line
the act or process of assigning numbers to phenomena according to a rule
any maneuver made as part of progress toward a goal
measuring instrument having a sequence of marks at regular intervals; used as a reference in making measurements
a container of some standard capacity that is used to obtain fixed amounts of a substance
musical notation for a repeating pattern of musical beats
(prosody) the accent in a metrical foot of verse
a statute in draft before it becomes law
a basis for comparison; a reference point against which other things can be evaluated

measure (adjective)	plumb (adjective)
	exactly vertical

measure (verb)	plumb (verb)
express as a number or measure or quantity	adjust with a plumb line so as to make vertical
determine the measurements of something or somebody, take measurements of	measure the depth of something
evaluate or estimate the nature, quality, ability, extent, or significance of	examine thoroughly and in great depth
have certain dimensions	weight with lead

measure (adverb)	plumb (adverb)
	conforming to the direction of a plumb line
	exactly
	completely; used as intensifiers