mixture vs combining

mixture and combining both are nouns.

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

As nouns, combining is a hypernym of mixture; that is, combining is a word with a broader meaning than mixture:

Other hypernyms of mixture include combination, compounding.

As nouns, combining is a hypernym of mixture; that is, combining is a word with a broader meaning than mixture:

Other hypernyms of mixture include combine.

mixture (noun)	combining (noun)
the act of mixing together	the act of combining things to form a new whole
an event that combines things in a mixture	an occurrence that results in things being united
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)