gist vs pith

gist and pith both are nouns.

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

As nouns, gist and pith are synonyms defined as:

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

gist (noun)	pith (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	soft spongelike central cylinder of the stems of most flowering plants

gist (verb)	pith (verb)
	remove the pith from (a plant)