elixir vs cure-all

elixir and cure-all both are nouns.

Word	Noun	Adjective	Verb	Adverb
elixir	Yes	No	No	No
cure-all	Yes	No	No	No

As nouns, cure-all is a hypernym of elixir; that is, cure-all is a word with a broader meaning than elixir:

elixir: a substance believed to cure all ills
cure-all: hypothetical remedy for all ills or diseases; once sought by the alchemists

Other hypernyms of elixir include catholicon, nostrum, panacea, potion.

elixir (noun)	cure-all (noun)
a substance believed to cure all ills	hypothetical remedy for all ills or diseases; once sought by the alchemists
a sweet flavored liquid (usually containing a small amount of alcohol) used in compounding medicines to be taken by mouth in order to mask an unpleasant taste
hypothetical substance that the alchemists believed to be capable of changing base metals into gold