compounding vs mixture

compounding and mixture both are nouns.

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

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

compounding (noun)	mixture (noun)
the act of combining things to form a new whole	the act of mixing together
	an event that combines things in a mixture
	any foodstuff made by combining different ingredients
	a collection containing a variety of sorts of things
	(chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)