epistasis vs hypostasis

epistasis and hypostasis both are nouns.

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

As nouns, epistasis and hypostasis are synonyms defined as:

epistasis and hypostasis: the suppression of a gene by the effect of an unrelated gene

epistasis (noun)	hypostasis (noun)
the suppression of a gene by the effect of an unrelated gene	(metaphysics) essential nature or underlying reality
	any of the three persons of the Godhead constituting the Trinity especially the person of Christ in which divine and human natures are united
	the accumulation of blood in an organ
	the suppression of a gene by the effect of an unrelated gene