quiddity vs gist

quiddity and gist both are nouns.

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

As nouns, gist is a hypernym of quiddity; that is, gist is a word with a broader meaning than quiddity:

quiddity: the essence that makes something the kind of thing it is and makes it different from any other
gist: the choicest or most essential or most vital part of some idea or experience

quiddity (noun)	gist (noun)
the essence that makes something the kind of thing it is and makes it different from any other	the choicest or most essential or most vital part of some idea or experience
an evasion of the point of an argument by raising irrelevant distinctions or objections	the central meaning or theme of a speech or literary work