nub vs hypostasis

nub and hypostasis both are nouns.

Word	Noun	Adjective	Verb	Adverb
nub	Yes	No	No	No
hypostasis	Yes	No	No	No

As nouns, hypostasis is a hyponym of nub; that is, hypostasis is a word with a more specific, narrower meaning than nub:

nub: the choicest or most essential or most vital part of some idea or experience
hypostasis: (metaphysics) essential nature or underlying reality

Other hyponyms of nub include bare bones, haecceity, quiddity, quintessence, stuff.

nub (noun)	hypostasis (noun)
the choicest or most essential or most vital part of some idea or experience	(metaphysics) essential nature or underlying reality
a small piece	any of the three persons of the Godhead constituting the Trinity especially the person of Christ in which divine and human natures are united
a small lump or protuberance	the accumulation of blood in an organ
	the suppression of a gene by the effect of an unrelated gene