quantify vs gauge

quantify is not a noun while gauge is a noun.

Word	Noun	Adjective	Verb	Adverb
quantify	No	No	Yes	No
gauge	Yes	No	Yes	No

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

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

quantify (noun)	gauge (noun)
	a measuring instrument for measuring and indicating a quantity such as the thickness of wire or the amount of rain etc.
	the distance between the rails of a railway or between the wheels of a train
	the thickness of wire
	diameter of a tube or gun barrel
	accepted or approved instance or example of a quantity or quality against which others are judged or measured or compared

quantify (verb)	gauge (verb)
express as a number or measure or quantity	measure precisely and against a standard
use as a quantifier	adapt to a specified measurement
	mix in specific proportions
	judge tentatively or form an estimate of (quantities or time)
	determine the capacity, volume, or contents of by measurement and calculation
	rub to a uniform size