quantify vs fathom

quantify is not a noun while fathom is a noun.

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

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

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

quantify (noun)	fathom (noun)
	a linear unit of measurement (equal to 6 feet) for water depth
	(mining) a unit of volume (equal to 6 cubic feet) used in measuring bodies of ore

quantify (verb)	fathom (verb)
express as a number or measure or quantity	measure the depth of (a body of water) with a sounding line
use as a quantifier	come to understand