gist vs nub

gist and nub both are nouns.

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

As nouns, gist and nub are synonyms defined as:

gist and nub: the choicest or most essential or most vital part of some idea or experience

gist (noun)	nub (noun)
the choicest or most essential or most vital part of some idea or experience	the choicest or most essential or most vital part of some idea or experience
the central meaning or theme of a speech or literary work	a small piece
	a small lump or protuberance