mixture vs concoction

mixture and concoction both are nouns.

Word	Noun	Adjective	Verb	Adverb
mixture	Yes	No	No	No
concoction	Yes	No	No	No

As nouns, concoction is a hyponym of mixture; that is, concoction is a word with a more specific, narrower meaning than mixture:

Other hyponyms of mixture include blend.

As nouns, mixture and concoction are synonyms defined as:

mixture and concoction: any foodstuff made by combining different ingredients

Other synonyms of mixture include intermixture.

mixture (noun)	concoction (noun)
the act of mixing together	the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components
an event that combines things in a mixture	the invention of a scheme or story to suit some purpose
any foodstuff made by combining different ingredients	an occurrence of an unusual mixture
a collection containing a variety of sorts of things	any foodstuff made by combining different ingredients
(chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)